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 5930-01-563-8334
NSN 2925-00-149-0760
NSN 6240-01-570-8070
NSN 5935-01-038-8744
NSN 6685-01-198-5776
NSN 5985-00-770-5558
NSN 6610-01-422-1322
NSN 6320-01-296-3181
NSN 6685-00-191-9357
NSN 5920-01-615-3007
NSN 5920-01-460-4290
NSN 6220-01-653-4100