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 2925-00-035-5633
NSN 6685-01-318-4995
NSN 5895-01-458-6023
NSN 5910-01-448-1709
NSN 5996-00-835-0672
NSN 6145-01-077-1543
NSN 5996-00-086-9352
NSN 5965-00-156-7372
NSN 6220-00-571-9499
NSN 5930-00-184-7994
NSN 5996-01-097-3068
NSN 5985-01-267-5376