Plastic Saddle Washers

Custom Plastic Saddle Washers Manufacturer

Plastic saddle washers are contoured to seat against pipes, rods, and other curved surfaces — where a flat washer would rock, shift under load, or bite into the substrate. The curved profile spreads clamping force evenly around the mating surface, keeping the assembly seated and preventing the washer from rotating or walking under vibration.

Flexiparts builds saddle washers to your mating surface, not a catalog size. Send us the pipe or rod diameter, the curvature, and your load or clearance constraints, and we’ll match bore, thickness, and radius to fit before we cut tooling.

Engineering Considerations for Custom Saddle Washers

Bore size and curvature are matched to your pipe, rod, or shaft diameter to ensure a snug, stable fit without rocking or slipping. Thickness is selected based on load, compression, and the clearance available in your assembly. Curvature radius is built to your drawing or sample — send us the mating surface dimensions and we’ll confirm fit before tooling.

Common Materials

• Nylon — general-purpose strength and wear resistance
• PP — lightweight, chemical resistant, low cost
• PE — flexible, good impact absorption
• PVC — rigid, weather resistant for outdoor mounts
• PTFE — low friction, high chemical and heat resistance

Where Custom Saddle Washers Are Used

• Pipe clamps and hangers, where the washer seats directly against the pipe wall
• Cable and hose bundling on curved brackets or conduit
• Rod-end and shaft assemblies needing a stable, non-rotating seat
• Mounts where a flat washer would leave a gap or point-load the surface

Saddle Washer vs. Flat Washer: Which One Do You Need?

Use a saddle washer when the mounting surface is curved or cylindrical — pipes, rods, tubular brackets — where a flat washer would rock, shift, or fail to distribute load evenly. Use a flat washer when the surface is already flat and full, even contact is guaranteed without shaping.