Rubber Fab Kalrez® LS390 Tri-Clamp Gaskets

Kalrez® is a sealing product for use in food, beverage and pharmaceutical processing applications where FDA and Class VI compliance is required. Kalrez® Tri-Clamp® gaskets are designed to address thermal and chemical resistance, compression set issues and high static friction, which can cause intrusion in the process line. Kalrez® gaskets are designed to address these problems by offering high hardness, low stiction and a high temperature resistance. These properties enable increased MTBR (Mean time Between Repair). Because of its unique grey color, LS390 seals are easy to identify for proper material selection and application.

Sizes 1/2" to 6"
Max. Temp. up to 220°C
Standards DIN, ASME BPE, ISO and SMS (other on request)
Material Kalrez® LS390 (Grey)
Certificates FDA, USP Class VI-121°C, {87}, {88}



  • Low Stiction Performance
  • WFI and SIP/CIP Process
  • High Hardness/Modulas
  • Ease of Identification (Grey color)