This is a complete set of seals for all versions of the Crosman model 38T & 38C in both. 177 and. 22 cal. (I majored in Plastics in college) I am at the end of my fifth batch of 1000. I do not substitute O-rings where the manufacturer designed for gaskets.
Crosman 38T / 38C Seal Kit - Accurate Airguns Website
CROSMAN 38T REPLACING CO2 CARTRIDGE SEAL
CRS38SK COMPLETE Crosman 38 Seal Kit [CRS38SK] - $29.95 : JG Airguns, LLC
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CROSMAN 38T / 38C Seal Kit COMPLETE, All Parts Are OEM Spec. (4000+ Sold) $34.95 - PicClick
Hammerli Airguns - Midsouth Shooters Supply
16 - August 2020, PDF, Subscription Business Model
NEW OEM CROSMAN COMPLETE OEM VALVE + PISTON CUP 1377 1322 Rebuild Reseal Kit $18.38 - PicClick
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Crosman 38T Parts FOR SALE! - PicClick
Crosman 38T Parts FOR SALE! - PicClick