Key Characteristics of a K-Type Gasket

• Profile: The “K” shape of this gasket is designed for a specific fit. It has a base that is pushed into a dedicated groove in the uPVC profile, and a series of “flanges” or “wings” that create the sealing surface. The K-shape allows it to provide multiple points of contact for an effective seal.

• Material: K-type gaskets are typically made from EPDM (ethylene propylene diene monomer) rubber. EPDM is a preferred material for this application due to its:

  • Durability: It is highly resistant to UV rays, extreme temperatures, and weathering, ensuring a long lifespan.

  • Flexibility: It remains flexible over a wide temperature range, allowing it to compress and decompress without losing its sealing properties.

• Functionality: The design of the K-type gasket offers:

  • Excellent Compression: The “K” profile is designed to compress when the window or door is closed, filling the gap and creating an airtight seal.

  • Enhanced Water Drainage: Some K-type gaskets are designed with channels that help to direct water away from the frame, further improving weather resistance.