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 5945-00-581-9875
NSN 2925-00-263-2714
NSN 6620-01-265-0632
NSN 5996-00-531-5398
NSN 6620-00-679-5830
NSN 6620-01-333-7014
NSN 6645-00-256-4072
NSN 6220-00-233-7436
NSN 5998-00-221-1973
NSN 5915-01-281-3636
NSN 6650-00-527-7451
NSN 6685-01-076-8967