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 6685-00-511-4477
NSN 5855-01-100-3272
NSN 4140-00-798-9144
NSN 5910-01-089-9560
NSN 5985-00-284-4283
NSN 6110-01-149-2839
NSN 6610-01-579-2984
NSN 6110-01-263-9437
NSN 5999-00-792-7962
NSN 6220-01-559-3594
NSN 5835-01-622-2556
NSN 5960-01-152-7740