Silicone Caps

Silicone Masking Caps

Flexible silicone caps for masking studs, bolts, shafts, and tube ends in powder coating, anodizing, and plating operations.

Why Choose Silicone Masking Caps?

Reliable protection for external threads and cylindrical surfaces

Silicone Caps

Standard round caps for masking studs, bolts, shafts, and tube ends. Flexible design stretches to fit over threads while maintaining tight seal. Most versatile cap style for general applications. Customisation options: custom diameters, lengths, wall thicknesses, various shore hardnesses.

Rectangular Silicone Caps

Rectangular cross-section design for square or rectangular tubing and structural members. Prevents rotation during handling. Ideal for fabricated assemblies and architectural components. Customisation options: custom dimensions, corner radii, wall thicknesses, grip features.

Silicone Caps with Flanges

Features integrated flange for positive seating and easy removal. Flange prevents cap from being pushed too far onto part. Excellent for high-volume production environments. Customisation options: flange diameters, cap depths, grip designs, various durometers.

Silicone Caps/Plugs with Flanges

Hybrid design functions as both cap and plug. Flange provides seating while body can seal hole or cover stud. Versatile solution for various geometries and applications. Customisation options: flange diameters, body lengths, internal/external configurations.

Industrial Applications

Masking external threads on bolts, studs, and fasteners during powder coating
Protecting shaft ends and cylindrical surfaces in anodizing processes
Sealing tube ends and pipe fittings during electroplating
Masking precision ground surfaces and bearing journals during finishing
Protecting threaded inserts and tapped holes in multi-stage coating operations

Need Metric or Imperial Sizes?

Our silicone caps are available in both metric and SAE sizes. Contact us with your thread specifications for sizing recommendations.