Washer or tape on cap

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Washer or tape on cap
Author: RR60 (VA) Occasionally I have a need to cap off a standard 1/4" or 3/8" stop valve. On the output side. For kitchen sink or ice maker. Can i just use any brass cap. And then would I put a washer inside the cap instead of using tape on the threads? Thanks
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Re: Washer or tape on cap
Author: packy (MA) what you need is called a compression cap
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Re: Washer or tape on cap
Author: sum (FL) It seals by compression so it shouldn't need any tape or dope, the cap should either have a built in washer inside or a copper ferrule that goes between the outlet and the cap.
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Re: Washer or tape on cap
Author: RR60 (VA) Just having a hard time finding the 1/4" one. Ones I see dont come with washers. And could not find a place online that sold washers that small. It seems most dont come with washers and you buy your own. I had some that fit the 3/8" cap which was a 00 washer.
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Re: Washer or tape on cap
Author: bsipps (PA) I have also had no luck finding the 1/4” compression cap Roll up some Teflon tape into a ball with your hands and stuff it in the cap it makes a good water proof seal if your valve is slowly passing
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Re: Washer or tape on cap
Author: vic (CA) [www.plumbingsupply.com]
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Re: Washer or tape on cap
Author: RR60 (VA) Thanks I had missed they sell them seperate from the caps Edited 1 times.
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