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 5990-01-160-6978
NSN 5835-00-187-1481
NSN 6320-01-415-0953
NSN 5996-00-103-9673
NSN 5925-01-424-5330
NSN 6130-00-031-5331
NSN 2925-00-555-8836
NSN 5835-01-412-0344
NSN 6620-01-207-0667
NSN 6240-00-169-1478
NSN 6220-01-179-6242
NSN 5905-01-215-0571