SUPERIOR SEALING - The four lobed design provides twice the sealing area with two sealing surfaces, and gives a positive seal with less friction.
LONGER SEAL LIFE - Twice the sealing surface means less squeeze for an effective seal. Result: less friction & longer life.
INCREASED RELIABILITY - Molding parting lines are between the lobes, away from the sealing surface, eliminating the problem of leakage resulting from parting line surface irregularities (standard o-ring lines are on the sealing face).
INCREASED STABILITY - The four lobed design creates a more stable seal and avoids spiral twisting, wear and leakage.