Spec hardware, served at warp speed.

o-rings › o-rings

MS28778-3

Military Standard Ring O

View quote list → Saved parts →

Description

O-Ring

Specifications

Center Hole Diameter Between 0.296 inches and 0.306 inches
Compound Specification Number MIL-P-5510
Cross-Sectional Height Between 0.061 inches and 0.067 inches
Description MS28778 Tube Fitting Boss Gasket
Hardness Rating 90 shore durometer a
Industry Standards/Certification MS28778
Inside Diameter 0.301 in
Material Rubber
NIIN 00-835-7485
NSN 5331-00-835-7485
Outside Diameter Between 0.418 inches and 0.44 inches
Temperature Range -65 to 212 ºF
Thickness 0.064 in
Tube OD 3/16
Tubing Outside Diameter 3/16 in
Weight 0.0045 lb

Other sizes

Parts that share this base number, ordered by size. Always verify the full specification before substituting.

Cross-reference

No interchangeable or dimensionally similar parts are on record for MS28778-3. Try the cross-reference lookup to search by a different part number.

Catalog data updated 2026-07-05. Report a data error