Square Silicone Rubber Hollow Tube Pipe Protector Seal Strips Width 2.5mm~108mm

Measure the width of the channel or gap you need to fill. The outer width of the strip should match or be very slightly larger than the gap so the hollow core compresses to create a snug seal. If you are sealing a door frame rebate, measure the rebate depth as well — the strip height (which equals the outer width for a square profile) should sit flush with or just proud of the frame face when uncompressed.

Yes. Silicone rubber has inherently good resistance to UV radiation and ozone, which makes it more durable outdoors than EPDM or neoprene alternatives over long periods. For applications in direct, prolonged sunlight, the Black variant typically shows less surface degradation than Clear over multi-year timescales.

These strips are rated from –60 °C to +250 °C (–76 °F to +482 °F). That covers most domestic oven door sealing tasks (typical oven interiors reach 230–260 °C) and many automotive under-hood applications where ambient temperatures stay below 250 °C. For continuous exposure at the upper limit, confirm the specific variant's hardness rating is appropriate for your clamping load.

Silicone rubber resists water, steam, dilute acids, and most household cleaning agents. It has moderate resistance to petroleum-based oils — for heavy oil or fuel immersion, a fluorosilicone or Viton profile would be a more appropriate choice. For general moisture sealing, HVAC, and food-adjacent applications, silicone is a well-established option.

These strips do not include adhesive backing. For temporary or repositionable installation, a silicone-compatible double-sided tape works well. For permanent bonding, apply a thin bead of silicone contact adhesive or RTV sealant to the mounting surface, press the strip in place, and allow to cure per the adhesive manufacturer's instructions. Mechanical retention in a channel groove is the most secure method for high-vibration environments.

Yes. Each strip is 1 meter long and cuts cleanly with sharp scissors or a utility knife on a flat surface. For 45° miter joints at corners, a miter box or a sharp craft knife guided by a metal ruler gives the cleanest result. Silicone does not fray or unravel at cut ends, so no end-sealing treatment is needed.

The color difference is cosmetic — all three share the same silicone rubber compound and temperature rating. Clear is useful when the strip needs to be visually unobtrusive on glass or light-colored panels. Black is the most common choice for machinery and automotive applications. Rust Red is often selected to match terracotta, brick, or warm-toned architectural finishes.