Co-Extruded EPDM Gaskets

 

 

Co-Extruded EPDM Gaskets

Co-extruded EPDM gaskets is a sealing gasket made of dense EPDM (ethylene propylene rubber) and foamed EPDM materials through a co-extrusion process. This co-extrusion process can extrude two EPDM materials with different properties at the same time to form a gasket with a double-layer structure.

 

Co-Extruded EPDM Gaskets adopts high-temperature setting microwave vulcanization process and has good stretch rate and compression deformation resistance. It has excellent properties such as air aging resistance, ozone aging resistance and a wide operating temperature range (-50℃~+150℃), and has a long service life. Different shapes, different materials or different application scenario characteristics (cold resistance, heat resistance, foaming, solid and other special performance requirements) can meet the needs of design, development and use. 

FAQs for Co-Extruded EPDM Gaskets

1. Q: What are Co-Extruded EPDM Gaskets and what are their key advantages?

A: Co-Extruded EPDM Gaskets are advanced sealing profiles created by fusing two different materials during the manufacturing process. Typically, this involves a soft, spongy EPDM rubber core securely bonded to a solid, dense EPDM or other polymer skin. The key advantages are dual-durometer performance of the hard outer layer. This results in a superior seal that is easier to install, lasts longer, and provides more reliable than single-material gaskets.

2. Q: Where are Co-Extruded EPDM Gaskets commonly used?

A: Thanks to their versatile performance, Co-Extruded EPDM Gaskets are ideal for demanding applications across multiple industries. Common uses include:

Sealing fixed or operable windows, curtain walls, and structural glass.

for bus, rail, and RV doors and windows.

that require protection from dust and moisture.

Sealing joints in metal roofing, siding, and composite panels where a combination of flexibility and structural strength is needed.

3. Q: How do I install a Co-Extruded EPDM Gasket?

A:fin or a self-adhesive backing. For fin-seal types, simply press the fin into a pre-designed channel or groove on the frame-it will lock securely into place. For adhesive-backed types, ensure the surface is clean, dry, and free of grease, then peel and press the gasket firmly into position. The rigid outer layer of co-extruded gaskets provides more handling stability than a pure sponge seal, making alignment and installation easier and more precise.

4. Q: Why choose a Co-Extruded EPDM Gasket over a standard sponge EPDM seal?

A: While standard sponge EPDM is a good sealant, co-extruded gaskets offer significant performance upgrades. The solid EPDM outer layer protects the soft sponge core from , greatly extending the product's service life. This construction also prevents the common problem of the gasket "taking a set" or becoming permanently compressed. Furthermore, the rigid backing allows for easier handling and a more secure mechanical fit, leading to a more consistent and reliable seal over time.

5. Q: Are Co-Extruded EPDM Gaskets resistant to extreme weather and temperatures?

A: Yes, absolutely. The EPDM material itself is renowned for its exceptional -40℃ to +70℃ (-40℃F to +158℃F). The co-extrusion process enhances this inherent durability. The dense outer skin acts as a sacrificial layer, shielding the compressible core from the harshest elements. This makes them an excellent long-term solution for performance year after year.