Molded waterproof neoprene rubber flat gaskets/O-rings

Neoprene rubber flat gaskets need mating faces suited to their actual section. A flat sealing ring and a round-section O-ring can require different receiving spaces, even if they share an overall diameter. The joint geometry should determine the profile instead of treating the names as equivalent replacements.

Check the contact width, thickness and opening dimensions with the complete assembly. The selected neoprene formulation must suit the actual medium and environment. A waterproof description does not establish a pressure or ingress rating without evaluation of that joint and its fastening arrangement.

Keep the gasket flat and clean while fitting it, and inspect narrow sections for twisting or folding before the faces close. During servicing, compare the contact pattern with the intended seating area. Uneven compression may indicate a mating-face or alignment issue rather than a need for simply thicker rubber. Replace damaged parts using the defined profile so the joint retains its original contact relationship and available compression.

Material options

Neoprene. Custom formulation and color for the intended contact conditions.

Hardness selection

Rubber: 30–90 Shore A. Uneven compression may indicate a mating-face or alignment issue rather than a need for simply thicker rubber.

Custom dimensions

Check the contact width, thickness and opening dimensions with the complete assembly.

Fit & assembly

Keep the gasket flat and clean while fitting it, and inspect narrow sections for twisting or folding before the faces close.

Use & inspection

Replace damaged parts using the defined profile so the joint retains its original contact relationship and available compression.

Photos illustrate structure or material only. A flat sealing ring and a round-section O-ring can require different receiving spaces, even if they share an overall diameter. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.