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 6685-00-395-3272
NSN 6645-01-292-9778
NSN 5915-00-552-9598
NSN 6610-01-093-4710
NSN 6150-00-952-2766
NSN 5930-01-099-2470
NSN 6620-01-446-6571
NSN 6150-01-449-1544
NSN 5950-01-653-4800
NSN 5965-01-139-5472
NSN 5985-00-522-5495
NSN 5975-01-482-3567