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All Springer/NP/PCP Air Gun Discussion General > Machine Shop Talk & AG Parts Machining

Another question for Bob

(1/1)

ccjr:
Which would be more suitable for piston seals, 75A Polyurethane rod or 95A?

CharlieDaTuna:
Probably the 75A. It would be more forgiving.

ccjr:
Thanks, Bob

I was leaning toward the soft one for a more conforming seal, but thought the hard might have better abrasion resistance.

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