Lip seal are generally made as per BS EN 681:1996. The said standard is for pipe joint seals used in water and drainage application.

Material : EPDM Polymer

82 mm Lip Seal = L-3581
110 mm Lip Seal = L-3608
160 mm Lip Seal = L-3609
200 mm Lip Seal = L-3611
250 mm Lip Seal = L-3612
315 mm Lip Seal = L-3636