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FIELD Urethane Fill Nipple O-ring 1.78 x 1.78 – Fill Pin Seal
The premium FIELD urethane O-ring (1.78 x 1.78 mm) is specifically designed for HPA regulator fill nipples. Thanks to its high-durability material, it ensures a perfect seal even under extreme pressure and frequent filling.
- Compatibility: Specifically for fill pins with a "nail head" style piston.
- Material: Durable urethane for a long lifespan and high resistance to damage during rapid filling.
FIELD Urethane O-ring: Reliable Sealing for Fill Valves
The fill nipple O-ring is one of the most stressed parts of your gun's air system. With every fill, it must withstand a sudden pressure spike and friction. The FIELD Urethane Fill Nipple O-ring is made from hard, durable urethane, which, unlike standard rubber, does not crack or deform easily under the blast from a fill station.
This specific 1.78 x 1.78 mm size is critical for the proper operation of the check valve. A correctly installed seal ensures that once the fill hose is disconnected, all air remains safely inside the tank.
Important Compatibility Note
Please verify your fill piston type before purchasing. This O-ring is compatible only with nail-head style pistons. If your regulator uses a cylinder-shaped piston with a groove, this O-ring is not suitable.
Key Features:
- High Durability: Urethane material excellently resists wear and temperature spikes.
- Long Lifespan: Designed for thousands of fill cycles without losing its seal.
- Leak Prevention: Ensures immediate closure of the check valve after filling.
Technical Specifications:
- Dimensions: 1.78 x 1.78 mm
- Material: High-strength Urethane
- Application: Fill nipples with "nail head" style pistons
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