Where sealing properties are required, the conical design directs the flow of the elastomeric portion toward the problem areas. Strength of backing provides load bearing, compresses seal vertically and protects it against turning fastener. Facing seal provides barrier against leakage at surface and around fastener. Protects surface from damage. Helps in reducing noise or vibration.
Effective seal develops around fastener when sealant is forced inward during tightening.
Conical design directs flow of facing materials to form a seal conforming to both fastener and sealing surface. Full face design cushioning fragile surface sand minimizes vibration. Choices of an infinite number of backing materials. Choice of various colors and finishes available. Choices of facing materials.