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 5998-01-570-2461
NSN 2925-01-491-8587
NSN 6135-00-491-9864
NSN 6220-01-100-4340
NSN 5985-01-302-9002
NSN 5915-00-644-5735
NSN 5985-01-226-9679
NSN 5975-01-541-6032
NSN 7035-00-521-6423
NSN 5985-01-561-6890
NSN 6110-00-389-4627
NSN 5925-01-223-6382