Threaded caps and end caps close off the open end of a pipe, fitting, or manifold port on pressure washing equipment. Use them to seal an unused outlet, cap a bypass line, or protect threads from debris. Stocked at Sun Brite Supply in Gaithersburg, MD.

Frequently Asked Questions

What size cap do I need?

Match the cap to the thread it covers — a 1/4", 3/8", or 1/2" NPT female cap threads onto the matching male nipple or port. Confirm thread size and gender before ordering.

What material holds up best?

Brass and stainless steel caps resist corrosion from chemicals and hot water; plated steel is fine for general high-pressure plumbing.

Need help? Call (301) 519-9274 — over 30 years of pressure washing experience.

Related Collections

All Fittings · Brass Pipe Fittings · Close Nipples