Need a firm yet flexible filler for gaps and joints? These black butyl mastic strips come as ready to use straight pieces, not messy rolls.
Order(MOQ) :
10000 PCSPayment :
T/T, PAYPALProduct Origin :
CHINAColor :
GREY, BLACK, WHITEShipping Port :
WUHAN, SHANGHAILead Time :
15-20 WORKING DAYSEach black butyl mastic strip is a pre cut block of non curing butyl rubber, typically 300mm long, 10–30mm wide, and 2–3mm thick. You can also order custom lengths. Unlike tapes that need winding, these strips are made for packing into gaps, wrapping around cables, or pressing between flanges. They stay permanently flexible and seal out moisture, dust, and vibration. Common uses include telecom cabinet gaskets, pipe joint fillers, and electrical insulation padding. The material is self fusing and adheres to metal, plastic, concrete, and painted surfaces without heat or tools. These butyl rubber sealing strips also work well as anti corrosion wrappers for steel pipes or as mastic dampening pads for mounted equipment.
Black buytl mastic strips help a lot for installation in various application, Solve many problems such as filling,sealing,insulating and waterproofing, etc, Save time and cost.
|
Parameter |
Value |
|
Material |
Non curing butyl rubber |
|
Colour |
Black |
|
Length |
300 mm ± 3 mm (custom: 50–1000 mm) |
|
Width |
10 – 30 mm (custom available) |
|
Thickness |
2 – 3 mm (±0.2 mm) |
|
Temperature range |
-40°C to +120°C |
|
Dielectric strength |
> 12 kV/mm |
|
Water absorption |
≤ 0.2% by weight |
|
Elongation at break |
≥ 600% |
|
UV & ozone resistance |
Excellent |
Provides long time filling and sealing protection and reduces costs for cable,pipe and other systems.
Strips are stacked flat, separated by silicone release paper to prevent sticking. Packed into corrugated cartons.
Standard quantity: 300–800 strips per box depending on size.
Label printed with dimensions and batch number.
Shipped via air or sea freight. Sample strips (2-10 pieces) sent in 7 business days.
Q: Can these Black butyl mastic strip be used outdoors for many years?
A: Yes – butyl resists UV, rain, and ozone. In direct sunlight, the surface may darken slightly but the seal stays intact.
Q: Are they sticky on both sides?
A: Yes – they are double sided adhesive. Both sides are tacky . You press them into place; they stay by compression and light adhesion.
Q: Can I order a different length than 300mm?
A: Yes – custom lengths from 50mm up to 1000mm. Mention your size when requesting a quote.
Q: Do they conduct electricity?
A: No – the material is an electrical insulator. Safe for use near live terminals and inside distribution boxes.
We have supplied Black butyl mastic strip to Asia&European&America telecom installers and pipeline contractors for over 10 years. Every batch is tested for flexibility, compression set, and dielectric strength. You get straight answers, real factory pricing, and small order welcome. No AI templates – just practical products from people who understand job site problems.
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