This listing is for one (1) URETHANE piercing cap/
tube cap seal, part # 150-054U.
Urethane offers superior strength, tear and abrasion resistance.
If you need help in deciding to buy my seals and attempt a DIY, and don't already have a shop manual, you can down load one for free. Simply Google " Crosman Factory Service Manual". The PDF will have all of the exploded views, part numbers, and service information for vintage model Crosmans.
Thank you
If there are any problems, please let me know before leaving any negative feedback, and I will take care of any issues as soon as possible.