replaced mine... puffs a little air into my face...does it need to settle down?..mine o rings inner circle is 6mm and the ring is 1,5 mm..thx for the ansvers
DaveG is correct. The .25 Bobcat uses a metric 6.35 mm X 1.27 mm O-ring. There are a couple of places the sell them in the States and they only come in Viton with a Shore A80 hardness.
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