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 6240-00-583-9863
NSN 6220-01-192-5423
NSN 5950-01-436-1219
NSN 6240-01-153-2861
NSN 6645-00-794-4576
NSN 4140-01-570-5784
NSN 5990-00-932-3070
NSN 5985-01-388-8334
NSN 5998-00-216-7436
NSN 6685-01-398-1951
NSN 6135-01-618-8314
NSN 5905-00-191-8069