Norseal^® Reinforced Silicone
Solid Rubber

Norseal silicone rubber reinforced with fiberglass increases the product’s dimensional stability for high-pressure applications, while functioning over a wide temperature range. Most products feature different solid silicone rubber durometers (hardness) on both sides of the fiberglass reinforcement. We also offer a product with a closed cell silicone sponge on both sides of the fiberglass substrate. Materials can be supplied in yard goods and sheets, with and without pressure-sensitive adhesive on one side.Thicknesses range from .032” (.81mm) up to .125” (3.17mm). Products are designed for various ranges of pressure and temperature resistance. 

Product Range

• Norseal 4032 and Norseal 4050 - thin material typically chosen for flexible gasketing applications
• Norseal 3320 - general purpose press pads for temperatures up to 350°F (177°C) and pressures up to 500 psi
• Norseal 4420 - increased temperature resistance up to 400°F (204°C) and pressures up to 500 psi
• Norseal 4444 - increased temperature resistance up to 400°F (204°C) and pressures up to 1000 psi
• Norseal 4480 - our most reversion resistant silicone compound designed for temperature resistance up to 600°F (315°C ) and pressure up to 1000 psi
• Norseal R10450 - closed cell sponge on both sides of fiberglass fabric for cushioning and dust and moisture resistant gasketing applications