Gas Capsule Seal for Crossman CO₂ Guns
Replace worn seals and stop annoying hissing leaks with this reliable gas capsule seal designed for use with compatible Crossman CO₂ pistols and rifles. A small maintenance part that makes a big difference to shot consistency and gas economy.

Why replace the seal

• Prevents leaks: Restores an airtight seal between the CO₂ cartridge and the gun’s valve to avoid wasted gas and inconsistent shots.
• Restores performance: A fresh seal helps maintain consistent pressure for reliable velocity across the life of a cartridge.
• Cost-effective maintenance: Easy, affordable replacement that avoids more expensive repairs or component replacements.

Key features

• Application: Replacement seal for use with compatible Crossman CO₂ cartridge fittings
• Material: Durable rubber/urethane compound designed for low-temperature and high-pressure use
• Installation: Simple swap-out — remove the old seal, clean the seating surface and fit the new seal
• Use case: Ideal for shooters experiencing hissing leaks, loss of charge or reduced shot consistency

Installation & tips

• Ensure the gun is unloaded and no CO₂ cartridge is fitted before starting.
• Remove the old seal and clean the seating area of debris or lubricant residue.
• Lightly lubricate the new seal with a silicone-based gun lubricant if recommended by the manufacturer.
• Fit the new seal evenly and reinsert the CO₂ cartridge; check for leaks before use.

Compatibility & safety notes

• Check fitment against your specific Crossman model — not all models use the same seal size or design.
• Replace any seal that appears cracked, flattened or hardened to avoid performance issues.
• Store spare seals in a cool, dry place away from solvents and direct sunlight.

Keep your CO₂ gun working reliably. Add this Gas Capsule Seal for Crossman CO₂ Guns to your maintenance kit and enjoy leak-free, consistent shooting every time.