Probably don't want to order from these guys.....
64937 are the replacement EPDM O-rings for those fittings. They are sold in a package of 100 for $74.40.
Please feel free to contact us Mon-Fri 8:00 am - 5:00 pm EST, with any further questions or concerns.
United States Plastic Corp.®
Technical Support Representative
Hours: Mon-Fri 8:00am - 4:00pm, Eastern
Phone: 419-228-2242 / 800-537-9724 Ext. 610
Fax: 419-228-5034 / 800-854-5498
Received: 3/23/2010 9:20 PM
Subject: RE: Customer Can't Find Product - USP
A contact form was submitted at 3/23/2010 10:20:47 PM.
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Do you sell the replacement o-rings for these QD's? Do you know the size? Item #: 60801 In Stock: On Order Sold By: Each Manufacturer: Colder Products Catalog Page Number: P-310