Manufacturing since 1979 · Exporting to 100+ countries

Heat Shrink Boots for Cable Harness Connectors — Military Spec

Cross-linked polyolefin boot for connector joints in cable harnesses, conforming to military specifications. Straight, right-angle, lipped, Y-type, 2-way and 3-way geometries across the GHSB, GHRB, GHYB, GHS2-N and GHS3-N ranges; the Y-type boot is type tested to SAE AS81765/1. Shrinks at 120°C, flame retardant and self-extinguishing.

MIL-I-81765A
SAE AS81765/1
ASTM D412

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Heat Shrink Boot

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Selection Charts

H: Diameter of the body (large) end
J, K, L, N: Diameters of the neck, finger or branch ends
s (min): As supplied, minimum
f (max): After free recovery, maximum
P, R, S, T, U, V, M, …O: Lengths, as marked on the drawing for each shape
W, HW, JW, KW: Wall thickness

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	P(±10%)	R(±10%)	Jo(±10%)	W(±20%)
GHSB-0408	16.50	7.90	16.50	3.80	25.40	14.20	5.80	1.27
GHSB-0408L	16.50	7.00	16.50	4.00	50.00	19.00	28.00	1.80
GHSB-0510	24.60	9.90	24.60	5.30	38.10	21.80	9.10	1.52
GHSB-0614	28.40	14.20	28.40	6.60	51.30	27.90	13.00	1.78
GHSB-0714	32.00	14.00	32.00	7.00	65.00	36.00	17.00	1.80
GHSB-0820	36.10	21.90	36.10	8.60	73.70	41.40	16.00	1.78
GHSB-0927	42.70	27.40	42.70	9.40	99.10	62.70	18.00	2.03
GHSB-0927SL	46.00	28.00	46.00	10.00	85.00	45.00	20.00	2.50
GHSB-1535	51.80	35.30	51.80	16.00	130.00	64.80	41.90	3.30
GHSB-1743	66.00	43.50	66.00	17.00	161.30	90.20	47.80	3.81
GHSB-2557	86.40	57.20	86.40	25.00	212.60	113.00	62.20	4.06

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

Straight Boot With Lip (GHSB/L)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	P(±10%)	R(±10%)	S(min)	T(min)	Jo(±10%)	U & V(±10%)	HW & JW(±20%)
GHSB/L- 0510	25.60	10.30	23.00	4.70	38.00	21.20	3.00	1.00	8.30	10.00	2.00
GHSB/L- 0614	28.40	14.30	28.40	6.60	54.90	21.60	3.00	1.00	16.50	12.00	1.78
GHSB/L-0714	31.00	14.00	31.00	7.20	66.80	24.50	3.00	1.00	17.80	20.00	2.03
GHSB/L-0820	37.00	20.00	35.00	8.40	76.00	46.00	3.00	1.00	14.50	15.00	1.80
GHSB/L-0927	42.70	28.20	42.70	9.90	103.60	36.70	3.00	1.65	24.60	20.00	2.29
GHSB/L-1535	51.80	35.10	51.80	15.80	130.30	53.80	3.00	1.65	9.60	20.00	3.30
GHSB/L-1743	66.00	43.50	66.00	17.00	165.10	65.60	3.00	1.65	48.30	20.00	4.06
GHSB/L-2557	81.70	57.60	81.70	25.40	177.80	67.10	3.00	1.65	47.80	20.00	4.06

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

Straight Boot With Lip & Rib (GHSB/LR)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	P(±10%)	R(±10%)	S(±10%)	T(±10%)	Jo(±10%)	U & V(±10%)	HW(±20%)	JW(±20%)
GHSB/LR- 0510	25.60	10.30	23.00	4.70	38.00	21.20	3.00	1.00	8.30	10.00	2.00	1.20
GHSB/LR- 0614	30.00	14.20	30.00	5.90	55.00	32.00	3.00	1.00	13.00	12.00	1.80	1.00
GHSB/LR-0714	31.00	18.00	31.00	7.10	67.00	35.00	3.00	1.00	18.00	20.00	1.80	1.00
GHSB/LR-0820	37.00	20.00	35.00	8.40	76.00	46.00	3.00	1.00	14.50	15.00	1.70	1.30
GHSB/LR0927	43.00	28.20	43.00	9.90	99.00	61.00	3.00	1.70	21.00	20.00	2.20	1.20
GHSB/LR-1535	60.00	35.10	60.00	15.70	130.00	72.00	3.00	1.70	39.00	20.00	3.30	1.50
GHSB/LR- 1743	66.00	43.50	66.00	17.00	171.00	90.00	3.00	2.00	51.50	20.00	3.80	2.00
GHSB/LR-2557	81.70	57.60	81.70	25.40	177.80	67.10	3.00	1.65	47.80	20.00	4.06	3.00

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

P Type Boot (GHPB/L)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	P(±10%)	R(±10%)	HW(±20%)	JW(±20%)	V(min)	T(min)
GHPB/L- 0611	22.30	11.40	22.30	6.40	105.90	11.70	1.50	1.10	3.00	1.00
GHPB/L -0611 SL	22.30	11.40	22.30	6.40	76.00	11.70	1.50	1.10	3.00	1.00
GHPB/L- 0715	25.60	15.00	25.60	7.40	121.20	12.20	1.50	1.10	3.00	1.00
GHPB/L- 0715 SL	25.60	15.00	25.60	7.40	83.00	12.20	1.50	1.10	3.00	1.00
GHPB/L- 0819	29.40	18.80	29.40	8.40	138.70	12.20	1.80	1.10	3.00	1.00
GHPB/L- 0819 SL	29.40	18.80	29.40	8.40	89.00	12.20	1.80	1.10	3.00	1.00
GHPB/L- 1023	34.00	22.90	34.00	9.70	159.20	12.20	1.80	1.10	3.00	1.00
GHPB/L- 1023 SL	34.00	22.90	34.00	9.70	102.00	12.20	1.80	1.10	3.00	1.00
GHPB/L-1027	37.30	26.90	37.30	10.40	177.80	14.00	2.00	1.10	3.00	1.70
GHPB/L-1027 SL	37.30	26.90	37.30	10.40	108.00	14.00	2.00	1.10	3.00	1.70
GHPB/L-1234	43.70	34.00	43.70	12.20	203.20	15.20	2.00	1.10	3.00	1.70
GHPB/L-1234 SL	43.70	34.00	43.70	12.20	114.00	15.20	2.00	1.10	3.00	1.70
GHPB/L-1441	50.00	41.20	50.00	14.20	203.20	15.20	2.30	1.40	3.00	1.70
GHPB/L-1441 SL	50.00	41.20	50.00	14.20	118.00	15.20	2.30	1.40	3.00	1.70
GHPB/L-1747	62.70	47.00	62.70	17.50	203.20	16.00	2.50	1.40	3.00	2.00
GHPB/L-1747 SL	62.70	47.00	62.70	17.50	121.00	16.00	2.50	1.40	3.00	2.00
GHPB/L- 2060	69.30	59.70	69.30	19.60	203.20	16.00	2.50	1.40	3.00	2.00
GHPB/L- 2060 SL	69.30	59.70	69.30	19.60	127.00	16.00	2.50	1.40	3.00	2.00
GHPB/L- 2367	81.80	67.10	81.80	22.90	203.20	16.00	2.50	1.40	3.00	2.00

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

P Type Boot (GHPB1/L)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	P(±10%)	R(±10%)	S(±10%)	HW(±20%)	JW(±20%)	V(min)	T(min)
GHPB1/L- 0710	23.80	9.90	17.20	6.60	105.90	11.60	86.30	1.50	1.50	1.50	1.30
GHPB1/L- 0813	27.10	13.20	20.80	7.60	121.10	12.10	98.50	1.50	1.50	1.50	1.30
GHPB1/L- 0918	30.90	18.50	24.30	8.90	138.60	12.10	112.70	1.70	1.50	1.70	1.30
GHPB1/L- 1022	35.60	22.10	28.70	10.10	159.50	12.10	130.80	1.70	1.50	1.70	1.30
GHPB1/L- 1128	38.80	28.20	31.40	10.90	177.80	13.90	142.20	1.70	1.50	1.70	1.80
GHPB1/L- 1332	42.50	32.20	38.30	12.70	203.20	15.20	163.00	1.70	1.50	1.70	1.80
GHPB1/L- 1541	51.50	41.10	45.40	14.90	203.20	15.20	157.70	1.70	1.70	1.70	1.80
GHPB1/L - 1745	62.70	45.40	53.30	16.70	228.60	16.00	153.10	1.70	1.70	1.70	1.80

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

P Type Boot (GHPB2/L)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	P(±10%)	R(±10%)	S(±10%)	HW(±20%)	JW(±20%)	V(min)	T(min)
GHPB2/L- 0213	19.30	13.00	6.30	2.00	60.00	11.70	38.00	1.50	1.10	3.30	1.00
GHPB2/L- 0316	26.10	16.00	7.60	2.60	74.20	12.20	45.00	1.80	1.10	3.30	1.00
GHPB2/L- 0316 L	26.10	16.00	7.60	2.60	80.20	18.20	45.00	1.80	1.10	3.30	1.00
GHPB2/L- 0326	34.20	26.00	9.60	3.10	84.00	12.20	51.00	1.80	1.10	3.30	1.00
GHPB2/L- 0434	43.60	34.10	11.60	3.60	100.00	12.20	58.00	1.80	1.10	3.30	1.00

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

Right Angle Boot (GHRB)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	P(±10%)	R(±10%)	T(±10%)	U(±10%)	JO(±10%)	W(±20%)
GHRB- 0308	17.80	7.90	17.80	2.50	17.30	20.10	15.20	11.40	4.30	1.00
GHRB- 0510	24.90	10.20	24.90	5.00	20.30	22.60	15.20	14.70	5.80	1.30
GHRB- 0614	30.00	14.20	30.00	6.30	29.80	28.50	18.50	17.20	7.10	1.50
GHRB- 0718	32.50	18.00	32.50	7.00	35.60	30.50	20.60	26.30	10.20	1.78
GHRB- 0822	36.10	22.00	36.10	8.40	43.70	35.10	19.10	30.00	12.70	1.78
GHRB- 1026	42.60	26.00	42.60	9.70	53.00	43.00	19.10	34.00	17.30	2.03
GHRB- 1534	53.10	33.80	53.10	15.00	75.70	52.80	25.40	53.20	32.00	3.30
GHRB- 1744	67.60	44.20	67.60	17.00	97.50	66.00	25.40	71.10	40.60	3.81
GHRB- 2355	87.60	55.40	87.60	23.40	128.00	79.20	25.40	87.60	56.40	4.57

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

Right Angle Boot With Lip (GHRB/L)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	P(±10%)	R(±10%)	HW & JW(±20%)	M(±10%)	S(±10%)	V(±10%)	T(±10%)
GHRB/L- 0510	23.30	10.40	23.30	5.00	20.30	22.90	1.30	15.20	5.80	3.00	1.00
GHRB/L- 0614	28.40	14.20	28.40	6.00	29.80	28.50	1.50	21.40	7.10	3.00	1.00
GHRB/L- 0718	31.00	18.00	31.00	7.10	35.60	30.50	1.80	20.60	8.60	3.00	1.00
GHRB/L- 0822	36.00	22.00	36.00	8.40	43.20	35.60	1.80	22.90	12.70	3.00	1.00
GHRB/L- 1026	42.60	26.00	42.60	9.70	53.30	43.20	2.00	27.90	15.70	3.00	1.70
GHRB/L- 1534	51.80	34.00	51.80	15.00	78.70	53.30	3.30	33.00	30.50	3.00	1.70
GHRB/L- 1744	66.00	44.50	66.00	17.00	97.50	66.00	3.80	–	40.60	3.00	2.00
GHRB/L- 2355	81.80	55.00	81.80	23.40	117.90	83.80	4.06	–	38.10	3.00	2.00

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

Right Angle Boot With Lip & Rib (GHRB/LR)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	P(±10%)	R(±10%)	M(±10%)	S(±10%)	HW(±20%)	JW(±20%)	V(±10%)	T(±10%)
GHRB/LR- 0510	25.70	10.50	22.00	4.80	24.50	25.00	(blank)	(blank)	2.00	1.00	3.00	1.00
GHRB/LR-0614	30.00	14.20	30.00	6.00	32.00	27.00	19.00	12.00	1.50	0.80	3.00	1.00
GHRB/LR-0718	31.00	18.00	31.00	7.00	40.00	31.00	21.00	15.00	1.80	1.00	3.00	1.00
GHRB/LR- 0822	36.00	22.00	36.00	8.50	46.00	38.00	26.00	15.00	1.80	1.00	3.00	1.00
GHRB/LR- 1026	43.00	26.00	40.00	10.00	52.00	44.00	(blank)	(blank)	3.00	1.00	3.00	1.70
GHRB/LR- 1534	60.00	34.00	60.00	15.00	80.00	54.00	35.00	30.00	3.30	1.50	3.00	1.70
GHRB/LR- 1744	66.00	45.00	66.00	17.00	108.00	68.00	42.00	51.00	3.80	2.00	3.00	2.00
GHRB/LR - 2355	82.00	55.00	82.00	23.40	118.00	84.00	52.00	39.00	4.00	4.00	3.00	2.00

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

L Type Boot (GHLB1/L)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	P(±10%)	R(±10%)	HW(±20%)	JW(±20%)	V(min)	T(min)
GHLB1/L- 0710	23.80	9.90	17.20	6.60	105.10	18.50	1.50	1.50	1.50	1.30
GHLB1/L- 0813	27.10	13.20	20.80	7.60	115.80	19.80	1.50	1.50	1.50	1.30
GHLB1/L- 0918	30.90	18.50	24.30	8.90	146.30	20.80	1.70	1.50	1.70	13.00
GHLB1/L- 1022	35.30	21.60	28.70	10.10	172.20	21.80	1.70	1.50	1.70	1.30
GHLB1/L- 1128	38.80	27.90	31.40	10.90	185.10	24.10	1.70	1.50	1.70	1.80
GHLB1/L- 1232	45.20	32.00	38.30	12.10	213.60	27.40	1.70	1.50	1.70	1.80
GHLB1/L- 1541	51.50	41.10	44.40	15.00	224.50	29.40	1.70	1.70	1.70	1.70

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

L Type Boot (GHLB/L)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	P(±10%)	R(±10%)	HW(±20%)	JW(±20%)	V(min)	T(min)
GHLB/L- 0611	22.30	11.40	22.30	6.40	105.20	18.50	1.50	1.10	3.30	1.00
GHLB/L- 0611 SL	22.30	11.40	22.30	6.40	70.00	18.50	1.50	1.10	3.30	1.00
GHLB/L- 0715	25.60	15.00	25.60	7.50	124.00	19.80	1.50	1.10	3.30	1.00
GHLB/L- 0715 SL	25.60	15.00	25.60	7.50	79.00	19.80	1.50	1.10	3.30	1.00
GHLB/L- 0819	29.40	19.00	29.40	8.50	146.30	20.80	1.80	1.10	3.30	1.00
GHLB/L- 0819 SL	29.40	19.00	29.40	8.50	89.00	20.80	1.80	1.10	3.30	1.00
GHLB/L- 1023	34.00	22.90	34.00	10.00	172.20	21.80	1.80	1.10	3.30	1.00
GHLB/L- 1023 SL	34.00	22.90	34.00	10.00	102.00	21.80	1.80	1.10	3.30	1.00
GHLB/L- 1029	37.30	29.50	37.30	11.00	185.20	24.40	2.00	1.10	3.30	1.70
GHLB/L- 1029 SL	37.30	29.50	37.30	11.00	108.00	24.40	2.00	1.10	3.30	1.70
GHLB/L- 1234	43.70	34.00	43.70	12.00	213.60	27.00	2.00	1.10	3.30	1.70
GHLB/L- 1234 SL	43.70	34.00	43.70	12.00	185.20	27.00	2.00	1.10	3.30	1.70
GHLB/L- 1441	50.00	41.10	50.00	14.50	224.50	30.00	2.30	1.40	3.30	1.70
GHLB/L- 1441 SL	50.00	41.10	50.00	14.50	132.00	30.00	2.30	1.40	3.30	1.70
GHLB/L- 1747	62.70	47.00	62.70	18.00	227.30	33.30	2.50	1.40	3.30	2.50
GHLB/L- 1747 SL	62.70	47.00	62.70	18.00	133.00	33.30	2.50	1.40	3.30	2.50
GHLB/L- 2060	69.30	59.70	69.30	20.00	233.40	35.10	2.50	1.40	3.30	2.50
GHLB/L- 2060 SL	69.30	59.70	69.30	20.00	137.00	35.10	2.50	1.40	3.30	2.50

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

Q Type Boot (GHQB)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	Ks(max)	Kf(max)	P(±10%)	R(±10%)	S(±10%)	HW(±20%)	JW(±20%)	KW(±20%)
GHQB- 0407	13.00	7.00	13.00	7.00	7.00	3.50	50.00	23.00	23.00	1.50	1.50	1.00
GHQB- 0413	27.00	13.00	27.00	13.00	7.00	3.50	93.00	41.00	36.00	2.50	2.50	1.00
GHQB- 0714	27.00	14.00	27.00	14.00	13.00	7.00	145.00	70.00	54.00	1.50	1.50	1.50

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

T Type Boot (GHTB)

Gala code	Hs / Ks(min)	Hf / Kf(max)	Js(min)	Jf(max)	P(±10%)	S(±10%)	R(±10%)	W(±20%)
GHTB- 0004	6.60	3.60	13.20	3.60	29.70	15.10	15.10	1.02
GHTB-0007	13.20	6.90	26.40	6.90	58.70	29.50	29.50	1.50
GHTB- 0010	20.00	10.20	40.00	10.20	90.00	45.00	45.00	2.00
GHTB- 0014	26.90	13.50	53.80	13.50	120.10	60.20	60.20	2.30
GHTB- 0030	55.60	30.20	111.20	30.20	246.40	123.20	123.20	3.05

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

T Type Boot (GHTB1)

Gala code	Hs(min)	Hf(max)	Js / Ks(min)	Jf / Kf(max)	P(±10%)	R/S(±10%)	W(±20%)
GHTB1- 0007	19.80	6.60	13.20	6.60	80.70	40.30	1.00
GHTB1- 0011	34.20	11.40	22.80	11.40	120.30	60.10	1.30
GHTB1- 0020	60.10	20.00	40.10	20.00	175.70	87.80	1.50
GHTB1- 0033	83.30	33.20	54.80	33.20	242.30	121.10	1.70

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

Q Type Boot (30° bifurcated) (GHQB1)

Gala code	Hs(min)	Hf(max)	Js(min)	Jf(max)	Ks(max)	Kf(max)	P(±10%)	R(±10%)	S(±10%)	HW(±20%)	JW(±20%)	KW(±20%)
GHQB1- 1015	30.40	15.00	30.40	15.00	20.30	10.00	82.60	32.00	51.00	2.50	2.50	1.80
GHQB1- 0918	35.60	18.30	35.60	18.30	15.20	8.60	63.50	19.10	41.10	2.50	2.50	1.50
GHQB1- 0519	35.60	18.80	35.60	18.80	10.20	5.30	61.00	19.10	35.60	2.80	2.80	1.50

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

Y Type Boot (GHYB)

Gala code	Hs(min)	Hf(max)	Js / Ks(min)	Jf / Kf(max)	P/R/S(±10%)	HO/JO/KO(±15%)	W(±20%)
GHYB-0007	19.80	6.60	13.20	6.60	40.60	25.40	1.50
GHYB-0011	34.20	11.40	22.80	11.40	62.90	41.10	1.30
GHYB-0020	60.10	20.00	40.10	20.00	94.70	63.50	1.50
GHYB-0033	83.30	33.20	54.80	33.20	133.80	49.70	1.70

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

2 Way Boot (GH2B)

Gala code	Hs(min)	Hf(max)	Js/Ks(min)	Jf/Kf(max)	HW(±20%)	JW & KW(±20%)	P(±10%)	R(±10%)	S(±10%)	T(±10%)
GH2B- 0306	13.20	6.10	6.60	3.30	1.52	1.02	22.40	19.30	23.90	15.50
GH2B- 0612	26.90	12.40	13.20	6.10	2.54	1.52	38.10	43.20	53.30	33.00
GH2B- 1218	38.60	18.00	26.90	12.40	3.05	2.54	65.50	78.70	78.70	55.90
GH2B- 1326	55.60	25.90	26.90	12.70	4.57	2.54	85.10	94.00	111.80	71.10

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

E Type Boot (GHEB)

Gala code	Hs(min)	Hf(max)	Js/Ks/Ls(min)	Jf/Kf/Lf(max)	P(±10%)	R/S/T(±10%)	HO/JO/KO(±15%)	W(±20%)
GHEB- 0007	19.80	6.60	13.20	6.60	85.80	42.90	25.40	1.00
GHEB- 0011	34.20	11.40	20.50	11.40	135.60	67.80	41.10	1.30
GHEB- 0020	60.10	20.00	36.00	20.00	207.20	103.60	63.50	1.50
GHEB- 0033	99.80	33.20	54.80	33.20	294.60	147.30	88.90	1.70

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

3 Way Boot (GH3B)

Gala code	Hs(min)	Hf(max)	Js/Ks/Ls(min)	Jf/Kf/Lf(max)	HW(±20%)	JW(±20%)	P(±10%)	R(±10%)	S(±10%)	T(±10%)	U(±10%)
GH3B-0407	13.20	6.60	6.60	3.60	1.52	1.02	46.20	25.40	20.80	30.50	15.70
GH3B-0713	26.90	13.20	13.20	6.90	2.54	1.52	93.20	50.30	42.90	57.20	33.00
GH3B-0713L	26.90	13.20	13.20	6.90	3.05	1.70	135.10	73.70	61.50	88.90	45.70
GH3B-1019	38.60	18.80	19.30	9.70	3.05	1.78	135.10	73.70	61.50	88.90	45.70
GH3B-1225	55.60	25.40	26.90	12.40	4.57	3.05	192.00	103.10	88.90	121.90	71.10
GH3B-2754	91.40	54.60	45.70	27.40	7.11	4.57	390.40	211.10	179.30	254.00	127.00

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

4 Way Boot (GH4B)

Gala code	Hs(min)	Hf(max)	Js/Ks/Ls/Ns(min)	Jf/Kf/Lf/Nf(max)	HW(±20%)	W(±20%)	P(±10%)	R(±10%)	S(±10%)	T(±10%)	U(±10%)	C°(±5%)	D°(±5%)
GH4B- 0307	13.20	6.90	6.60	3.50	1.52	1.02	24.10	38.40	24.10	43.90	20.00	45.00	15.00
GH4B- 0307L	13.20	6.90	6.60	3.50	1.52	1.02	49.30	36.10	45.00	50.50	25.40	45.00	15.00
GH4B-0510	19.30	9.70	9.40	5.30	1.78	1.02	35.60	36.10	32.00	43.20	23.10	45.00	15.00
GH4B-0510L	19.30	9.70	9.40	5.30	1.78	1.02	49.30	36.10	45.00	50.50	25.40	45.00	15.00
GH4B-0710	19.30	9.70	13.20	6.90	1.78	1.52	49.30	36.10	45.00	50.50	25.40	45.00	15.00
GH4B-0713	26.90	13.00	13.20	6.90	2.54	1.52	49.30	51.80	45.00	65.80	33.50	45.00	15.00
GH4B-1018	38.60	18.50	19.30	9.70	3.05	1.78	71.90	74.90	65.30	95.30	46.50	45.00	15.00
GH4B-1327	55.60	26.70	26.90	13.00	4.57	2.54	101.60	108.50	92.50	135.10	65.50	45.00	15.00

All dimensions are in mm. s: as supplied; f: after free recovery. Source: GALA Heat Shrink Boots catalogue, Issue 2, April 2026.

Material properties

Technical Specification

Technical Specification
Property	Standard Value	Test Standard
Oxygen Index	≥28%	ISO 4589
Dielectric Strength	≥20kV/mm	IEC 60243
Physical Properties
Tensile Strength	≥15MPa	ASTM-D-2671
Elongation at Break	≥500%	ASTM-D-2671
Hardness (Shore A)	90±2	ISO 868
Elongation at break after ageing (130 °C, 168h)	≥400%	ASTM-D-2671
Heat Shock (200 °C, 4h)	No dripping, flowing or cracking	UL 224
Low temperature flexibility	-55 °C	ISO 974
Solvent Resistance (23 °C, 24h)
Gasoline
Tensile strength	≥11Mpa	ASTM-D-2671
Elongation at break	≥400%	ASTM-D-2671
Diesel Oil
Tensile Strength	≥10Mpa	ASTM-D-2671
Elongation at break	≥350%	ASTM-D-2671
Acid & Alkali
Tensile Strength	≥12Mpa	ASTM-D-2671
Elongation at break	≥400%	ASTM-D-2671

Dimensions & Drawings

Cross-linked polyolefin boot for connector joints in cable harnesses, giving insulation and strain relief at the point a connector meets its cable.

Installs over a connector already mounted to the cable — no need to disconnect first.

Covered on this page

Heat Shrink Boots - Military Boots
Heat Shrink Straight Boot - Lipped
Heat Shrink Right Angle Boot - Lipped
Heat Shrink Boot - Y Type
Heat Shrink 2 Way Boot
Heat Shrink 3 Way Boot

Features & Benefits

Flame retardant and self-extinguishing
120°C shrink temperature, wide operating temperature range
Resistant to weathering, UV, chemicals, oils, fuels and solvents
Straight, right-angle, lipped, Y-type, 2-way and 3-way geometries; GHSB, GHRB, GHYB, GHS2-N and GHS3-N size ranges
Y-type boot type tested to Military Specification SAE AS81765/1
Tensile strength 9.5 N/mm² min and ultimate elongation 250% min (ASTM D412); water absorption 0.5% max (ASTM D570)
Dielectric strength 10 kV/mm min (ASTM D149), volume resistivity 1 x 10¹² ohm.cm min (ASTM D257)
Thermal ageing 175°C for 168 hours and heat shock 250°C for 30 minutes — no cracking or dripping (ASTM D2671)
Fungus resistance: no growth (ASTM G-21); chemical, solvent, oil and lubricant resistance to MIL-I-81765A
2-way and 3-way boots: oxygen index ≥28% (ISO 4589), dielectric strength ≥20 kV/mm (IEC 60243), hardness 90±2 Shore A (ISO 868), low temperature flexibility -55°C (ISO 974)

Applications

Connector joint insulation and strain relief on cable harness assemblies
Military-specification wire harness applications

Standards & Compliance

MIL-I-81765A
SAE AS81765/1
ASTM D412
ASTM D2671
ASTM D149
ASTM D257
ASTM G-21
ISO 4589
IEC 60243
ISO 868
UL 224
ISO 974

FAQs

Frequently Asked Questions

What is the Heat Shrink Boots for Cable Harness Connectors used for?

It is used for:

Connector joint insulation and strain relief on cable harness assemblies
Military-specification wire harness applications

How do I choose the right size?

Use the selection chart on this page: it lists every code with its dimensions, and the key above it says what each column means. If you are not sure which fits, send the dimensions you are working to with the form below.

Which standards and test methods are quoted for it?

These, with the values in the Technical Specification on this page:

MIL-I-81765A
SAE AS81765/1
ASTM D412
ASTM D2671
ASTM D149
ASTM D257
ASTM G-21
ISO 4589
IEC 60243
ISO 868

Can I get a quote, a sample or a size that is not listed?

Send your cable details, quantity and application with the "Request a Quote or Sample" form at the foot of this page. For a size or variant that is not in the chart, describe what you need there, or use Technical support at the top of the page, and the technical team will confirm what can be supplied.

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Years manufacturing
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Countries served
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Certified & tested

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