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 5996-00-948-7030
NSN 5990-01-414-2778
NSN 6610-00-506-1977
NSN 6685-00-080-7119
NSN 5930-01-407-9402
NSN 5895-01-657-5562
NSN 6610-01-250-2811
NSN 5920-00-009-3297
NSN 6220-00-255-4048
NSN 5950-01-194-1572
NSN 6220-01-652-3590
NSN 2925-01-133-8128