Flame retardant military standard double wall heat shrink tubing

Operating Temperature:: -45℃ to +135℃
Minimum Shrinkage Temperature:: 80℃
Shrink Ratio:: 3:1 & 4:1
Standard Color:: Black, red, blue, white, yellow, transparent (non-flame retardant)
Environmental Protection Standards:: RoHS
Features: Excellent hot melt adhesive and high shrink ratio provide excellent sealing properties

Military standard double-wall heat shrink tubing is made of high-quality polyolefin and hot melt adhesive co-extrusion. The outer polyolefin is a highly flame-retardant insulating material with good sealing and insulation properties, superior electrical and physical properties, and high flame retardancy. and other characteristics. It can complete moisture-proof sealing, insulation and mechanical protection in one go. Produced in accordance with military industry standards, the main functions are sealing, waterproof, moisture-proof, anti-corrosion, anti-leakage, multi-strand wire harness and insulation. Hot melt adhesive has good connection properties with plastics, rubber, and metals. It is mainly used for insulation, bundling and fixation of various types of wire harnesses, marine wires and cables and metal pipes that need to be sealed, waterproof, moisture-proof, and anti-corrosion. It is suitable for military standard level fields.

Military standard double wall heat shrinkable tube outer layer technical indicators
performance	index	experiment method
Tensile Strength	≥12 MPa	ASTM D 2671
Elongation at break	≥300%	ASTM D 2671
Strength after aging	≥8.4 MPa	175℃×168h
Elongation at break after aging	≥100%	175℃×168h
axial change rate	-8%~+8%	ASTM D 2671
Flame retardancy	pass	ASTM D 2671 B method
Thermal shock	No cracks, no dripping	ASTM D 2671(250℃×4h)
Cold bending flexibility	No cracks	ASTM D 2671(-45℃/4h）
water absorption	0.50%	ASTM D 570
Breakdown strength	≥15 MV/m	IEC 60243
Volume resistivity	≥1014 Ω·cm	IEC 60093
Military standard double-wall heat shrinkable tube hot melt adhesive technical indicators
performance	index	experiment method
Softening Point	90±5℃	ASTM E 28
water absorption	＜0.5%	ASTM D 570
Peel strength (PE)	120N/25mm	ASTM D 1000
Peel strength (Al)	80N/25mm	ASTM D 1000

Specification table of 3 times military standard double-wall heat shrinkable tube with glue
Specifications (mm)	Before shrinkage (mm)	After shrinkage (mm)			Packing
Specifications (mm)	the inside diameter of	the inside diameter of	total wall thickness	Glue thickness	meters/section	meters/roll
5F（3X） φ3/1	≥3	1	1	0.5	1.22	200
5F（3X）φ4.8/1.5	≥4.8	1.5	1	0.5	1.22	100
5F（3X） φ6/2	≥6	2	1	0.5	1.22	100
5F（3X） φ7.9	≥7.9	2.7	1.35	0.5	1.22	100
5F（3X） φ9/3	≥9	3	1.4	0.6	1.22	50
5F（3X） φ12/4	≥12	4	1.6	0.8	1.22	25
5F（3X） φ19/6	≥19	6	2.15	0.8	1.22	25
5F（3X） φ24/8	≥24	8	2.4	1.05	1.22	25
5F（3X） φ30/10	≥30	10	2.4	1.05	1.22	25
5F（3X） φ40/13	≥40	13	2.4	1.05	1.22	25
5F（3X） φ50/19	≥50	19	2.4	1.05	1.22	25
Specification table of 4 times military standard double-wall heat shrinkable tube with glue
Specifications (mm)	Before shrinkage (mm)	After shrinkage (mm)			Packing
Specifications (mm)	the inside diameter of	the inside diameter of	total wall thickness	Glue thickness	meters/section	meters/roll
5F（4X） φ4/1	≥4	1	1	0.5	1.22	100
5F（4X） φ6/1.5	≥6	1.5	1	0.6	1.22	100
5F（4X） φ8/2	≥8	2	1	0.75	1.22	50
5F（4X） φ12/3	≥12	3	1.4	1	1.22	25
5F（4X） φ16/4	≥16	4	1.6	1.05	1.22	25
5F（4X）φ20/5	≥20	5	2.4	1.2	1.22	25
5F（4X） φ24/6	≥24	6	2.15	1.25	1.22	25
5F（4X） φ32/8	≥32	8	2.4	1.25	1.22	25
5F（4X） φ52/13	≥52	13	2.4	1	1.22	—