The SMS seal in type R or L complies with the SMS 1149 standard and can only be mounted in fittings complying with the SMS 1146/1147 standard (for a 1145 tube). There are two SMS seal profiles: the R-type SMS seal has a rectangular cross-section, while the L-type SMS seal is flanged. After careful study, Techné can manufacture SMS seals with non-standard dimensions and in other materials. The SMS R or L section fitting seal is mainly used in the food industry. It is available in NBR, FPM, silicone, EPDM and PTFE.