Mansfield Sill Cock Repair Kit 630-7755

White and tand plastic bonnet nuts black rubber seals washers o-rings round grey graphite packings stainless screw and washer with bright brass retainer cup and brass screw.

WHAT OUR CUSTOMERS SAY…

“Sent Noel’s plumbing and image of what was needed, not being able to find it. They had it sent to me within a week and fitment was perfect. 👍 ”

-Lorenzo H.

03/12/2026

$30.47

The Mansfield 630-7755 (often referred to as the Prier 630-7755) is a comprehensive service repair kit designed to fix leaks in 300, 400, and 500 Series frost-proof wall hydrants.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

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Restore your outdoor water faucet to perfect working order with this comprehensive repair kit. Designed for Mansfield and Prier 300, 400, and 500 series wall hydrants, this kit eliminates annoying drips from the spout and leaks behind the handle. Includes essential wearable parts—seat washers, graphite packing, and O-rings—ensuring a leak-free, freeze-resistant seal for years to come.

630-7755

It replaces all standard wear parts—such as seat washers, packing, and O-rings—to stop dripping or leaking from the handle area.
Works with original Mansfield wall hydrants and newer Prier Diamond 300/400 Series models manufactured from 1970 to the present.

Kit assembly image with all components.

Related Documents

300 Series Faucet Parts Breakdown

400 Series Faucet Parts Breakdown

500 Series Faucet Parts Breakdown

UPC:670210370363

Customer submitted images.

Common questions about this product

Yes, this is the OEM recommended part.

If you’re not sure text us a picture 1-888-275-6635 or email us a picture at noelsplumbingsupply@fuse.net.

We will make sure you have the right part.

WHAT OUR CUSTOMERS SAY…

“I was at my witts end with a 39 year old American Standard faucet. It had been leaking for many, many months so I contacted American Standard. They referred me to Noel’s Plumbing. My faucet would not have been able to be replaced without removing the whole tub. They immediately contacted me and told me what to do. They stayed with me the whole time till I found the problem although they didn’t get a sale out of me they did fix my problem no more leaky faucet, I have them in my contacts now and will use them anytime I have a plumbing problem. Thank you Noels Plumbing for the best service I’ve ever had!! ”

-as

02/22/2024