Name: China UltraTough®High-Tear Silicone Sponge Manufacturers Suppliers Factory - Sanpu Silicone
Brand: Sanpu
SKU: 301186919

Core Selling Points

✅ Ultra-Fine Closed Cell Structure

UltraTough®High-Tear Silicone Sponge: Uniform and dense pores with smaller pore sizes, featuring comprehensive upgrades in airtightness, waterproofing, and thermal insulation performance.

Conventional spongy silicone: medium-sized pores with relatively uniform distribution

Complies with ASTM D1056-00 standard, with a stable density of 0.55±0.05 g/cm³ and water absorption rate ≤3.0%.

✅ High tear resistance + High tensile strength | Superior tear and tensile strength

UltraTough®High-Tear Silicone Sponge: Tensile strength ≥850 kPa (measured value: 1000 kPa), elongation ≥250% (measured value: 300%), with no cracking upon repeated bending tests.

Conventional silicone sponge: The tensile strength is typically <800 kPa, with an elongation <180%. It is prone to tearing and fracture, making it unsuitable for dynamic operating conditions.

At 100°C for 22 hours, the compression permanent deformation is <5%; the product remains undeformed and retains its efficacy after long-term use, with tear resistance improved by over 70%.

✅ Wide temperature range weather resistance | Extreme Temperature Resistance

UltraTough®High-Tear Silicone Sponge: Temperature Range-60°C to 250°C, with resistance to aging and ultraviolet radiation, ensuring durable and stable performance under outdoor/high-temperature conditions.

Conventional silicone sponge: The maximum temperature resistance is typically 200°C, and prolonged use may lead to aging, hardening, and cracking.

The woven mesh surface design enhances adhesion friction, and when combined with the back adhesive, it prevents displacement, ensuring more secure installation.

Technical Parameters

performance parameter	UltraTough®High-Tear Silicone Sponge	Conventional silicone sponge
Pore structure	Ultrafine closed pores, uniformly dense	Coarse open/half-open pores, unevenly distributed
tensile strength	≥850 kPa (measured value: 1000 kPa)	<800 kPa
elongation	≥250% (measured value: 300%)	<180%
resistance to ripping	Resistant to repeated bending without cracking, with excellent dynamic fatigue resistance	Prone to tearing and rupture
Maximum temperature tolerance	250℃	200℃
Permanent deformation compression (100°C × 22 h)	<5%	>10%
water absorption	≤3.0%	>5.0%

Applications

New Energy Sector: Power Battery Pack Buffer, Thermal Management Gasket, Battery Pack Sealing

Automotive Industry: Door/roof window sealing, engine compartment insulation and vibration damping, wiring harness protection

Photovoltaic industry: module frame sealing, inverter buffer pads, waterproofing for outdoor equipment

Industrial equipment: Mechanical equipment sealing, sound insulation and vibration reduction, high-temperature resistant gaskets, pipeline flange sealing

Why choose Sanpu?

Over 10 years of experience in foam silicone R&D and production, with direct supply from the source factory

Strictly adhere to international standards such as ASTM for comprehensive quality control throughout the entire process.

Supports customized thickness, width, back adhesive, and cutting and molding to meet personalized requirements

Quick prototyping, stable mass production, global shipping, professional foreign trade service team

Get samples immediately | Free test samples provided for intuitive comparison of performance differences with conventional foam silicone
Custom Consultation | Production can be customized according to your specific size, hardness, and surface requirements
Contact Us | Our professional engineers provide you with selection and application solutions

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