FIELD Replacement Top Piston O-Ring 10.00 x 2.00 Urethane – Piston Seal

FIELD Top Piston O-Ring: Keep the Heart of Your Regulator in Top Shape

The top piston O-ring is one of the most critical seals inside the regulator. It must provide an absolute seal between the piston and the regulator body to prevent air leaks and pressure spikes. The FIELD Replacement Top Piston O-Ring is made from harder urethane, which resists mechanical friction during firing much better than standard black rubber (NBR).

This 10.00 x 2.00 mm O-ring is designed to maintain its sealing properties even during high rates of fire. It is an essential spare part for anyone servicing their gun who wants to avoid unexpected field failures.

Key Features:

• Premium Urethane: Extreme resistance to abrasion and high pressure (up to 4500 PSI).
• Pressure Stability: Ensures smooth piston movement, leading to consistent muzzle velocity.
• Long Lifespan: Significantly longer service intervals compared to standard rubber rings.
• Chemical Resistance: Fully compatible with HPA system silicone lubricants.

Frequently Asked Questions (FAQ)

Question: My gun has inconsistent muzzle velocity. Could this ring be the cause?
Answer: Yes, a worn or "blown" piston seal is the most common cause of pressure fluctuations. Replacing it with a high-quality FIELD urethane ring often solves the issue.

Technical Specifications:

• Dimensions: 10.00 x 2.00 mm
• Material: High-strength Urethane
• Placement: Upper regulator piston