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 2925-00-394-2332
NSN 5960-01-173-7956
NSN 6110-01-454-0697
NSN 5985-01-063-8181
NSN 5950-00-216-9212
NSN 5985-00-081-9142
NSN 5975-01-422-2748
NSN 6610-00-561-5600
NSN 5999-00-232-7782
NSN 6220-01-422-2585
NSN 5999-01-258-5721
NSN 5905-01-143-5316