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 6610-00-133-3895
NSN 6610-01-250-2811
NSN 6685-00-966-5561
NSN 5996-00-146-7954
NSN 5960-01-048-4885
NSN 5925-01-342-7502
NSN 6240-01-596-3183
NSN 5950-00-353-5382
NSN 6220-01-048-5584
NSN 5905-01-037-5449
NSN 5975-01-448-2098
NSN 5990-00-649-8352