A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5930-00-125-2541
NSN 6320-00-456-0836
NSN 5975-00-111-3208
NSN 5910-00-265-6530
NSN 2925-00-136-2612
NSN 6610-01-633-8931
NSN 5965-01-319-5363
NSN 5915-01-142-2018
NSN 6620-00-708-1417
NSN 6240-01-171-0374
NSN 7035-01-498-1719
NSN 6145-00-375-5224