These are made to fit M style ( & perhaps other style) air couplers. they are the seal, or wear part where the plug seals to the coupler.
Very easy to install , and the rubber seems very good quality
I have had good luck with these, going on a year and a half. Mind you, my stuff isn't getting used as mush as it once was. here is the link to
Very easy to install , and the rubber seems very good quality
I have had good luck with these, going on a year and a half. Mind you, my stuff isn't getting used as mush as it once was. here is the link to
Replacement Square O-Ring 1/4" Industrial Quick Connect Coupling American Made (10pc)
https://www.amazon.com/dp/B085QLQX3R/?tag=atomicindus08-20
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