Cup Seal Universal Tippmann, Valken & BT-4 (Art.-No. 98-PL / 45) [SW1-45]

The No. 1 solution for repairing an air leak in the barrel

This is a classic but crucial part! Without the Cup Seal, it's impossible to maintain air pressure.

An air leak in the barrel, at the valve... that's the problem!

How the Cup Seal works

The Cup Seal acts as a sealing valve. When at rest, it blocks the air supply. When you pull the trigger, the hammer strikes the Cup Seal stem, briefly releasing the air needed to propel the ball.

Universal Cup Seal features

Multi-brand compatibility

Although listed for the Valken SW-1, this is a "standard" part for many paintball launchers. It is often found on models such as Tippmann (98, Sierra One, Bravo One) or BT-4.

• at Tippmann it's reference #98-PL
• at Valken it's part no. 45

Known signs of fatigue

If you hear a continuous hissing sound (air leakage) in the barrel when you're not firing, it's almost always the Cup Seal that's marked or dirty.

Minimum maintenance

It's a wearing part. Never force it when cleaning. A simple spot of silicone grease is generally sufficient.

Cup seals compatible with the following paintball launchers:

• EMPIRE BT4
• TIPPMANN BRAVO ONE
• TIPPMANN SIERRA ONE
• TIPPMANN FT50
• TIPPMANN A5 (all versions)
• TIPPMANN 98
• TIPPMANN 98 PS
• TIPPMANN STORMER
• TIPPMANN X7 (all versions)
• VALKEN SW1
• VALKEN BLACKHAWK

Expert advice from the paintball technician

"If you change this part, always check the condition of the valve spring just behind it. If it's compressed, your new Cup Seal may not close properly, causing an immediate leak even with a new part."

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