PartsTable
Technical Data Sheet
Download PDF

ST7M258-300 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ST7M258-300: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: GLASS AND RUBBER SYNTHETIC OVERALL, temp_rating: -65.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF, special_features: COATED WITH DRY FILM LUBRICANT, peripheral_diameter: 3.600 INCHES NOMINAL IN, center_hole_diameter: 2.970 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN, cross-sectional_height: 0.225 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-119-6802, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
ST7M258-300
NSN: 5330-01-119-6802
FSC: 5330 — Packing and Gasket Materials
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialGLASS AND RUBBER SYNTHETIC OVERALL
temp_rating-65.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF
special_featuresCOATED WITH DRY FILM LUBRICANT
peripheral_diameter3.600 INCHES NOMINAL IN
center_hole_diameter2.970 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN
cross-sectional_height0.225 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
cross-sectional_shape_styleOVAL
NSN5330-01-119-6802
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ST7M258-300 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
TEMP RATING: -65.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.225 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: OVAL
•
PERIPHERAL DIAMETER: 3.600 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 2.970 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN
•
MATERIAL: GLASS AND RUBBER SYNTHETIC OVERALL
TECHNICAL CHARACTERISTICS
TEMP RATING-65.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.225 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLEOVAL
PERIPHERAL DIAMETER3.600 INCHES NOMINAL IN
SPECIAL FEATURESCOATED WITH DRY FILM LUBRICANT
CENTER HOLE DIAMETER2.970 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN
MATERIALGLASS AND RUBBER SYNTHETIC OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
460-300Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy ST7M258-300?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is ST7M258-300?
ST7M258-300 is a PACKING,PREFORMED.
What parts can replace ST7M258-300?
There is 1 known substitute for ST7M258-300: 460-300. Substitute compatibility should be verified for your specific system.
What is the NSN for ST7M258-300?
ST7M258-300 is cataloged in the U.S. Government catalog under NSN 5330-01-119-6802. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — ST7M258-300