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 6110-00-170-6520
NSN 6320-01-412-2973
NSN 5996-01-426-6713
NSN 5835-00-907-4390
NSN 5935-01-313-2111
NSN 6685-01-025-6765
NSN 5985-01-281-4557
NSN 5990-00-232-3965
NSN 5935-01-094-5854
NSN 6645-00-508-5723
NSN 6610-00-654-9877
NSN 5945-01-318-1583