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ST7M254-133E2 — PACKING ASSEMBLY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ST7M254-133E2: PACKING ASSEMBLY.

The PACKING ASSEMBLY is a the manufacturer industrial component. Key specifications include height: 0.177 INCHES NOMINAL IN, material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR INTERMEDIATE RING, joint_type: SCARF-PERIPHERAL BOTTOM RING, temp_rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF, inside_diameter: 1.801 INCHES NOMINAL IN, outside_diameter: 1.992 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-089-6065, 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
ST7M254-133E2
NSN: 5330-01-089-6065
FSC: 5330 — Packing and Gasket Materials
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
height0.177 INCHES NOMINAL IN
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR INTERMEDIATE RING
joint_typeSCARF-PERIPHERAL BOTTOM RING
temp_rating-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
inside_diameter1.801 INCHES NOMINAL IN
outside_diameter1.992 INCHES NOMINAL IN
intermediate_ring_quantity1
cross-sectional_shape_styleSQUARE/RECTANGULAR BOTTOM RING
material_document_and_classification16 0 FSCM 72902 MFR REF SINGLE MATERIAL RESPONSE INTERMEDIATE RING
NSN5330-01-089-6065
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ST7M254-133E2 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 275.0 FAHRENHEIT DEGF
•
INTERMEDIATE RING QUANTITY: 1
•
OUTSIDE DIAMETER: 1.992 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 16 0 FSCM 72902 MFR REF SINGLE MATERIAL RESPONSE INTERMEDIATE RING
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR BOTTOM RING
•
INSIDE DIAMETER: 1.801 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
TEMP RATING-65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF
INTERMEDIATE RING QUANTITY1
OUTSIDE DIAMETER1.992 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION16 0 FSCM 72902 MFR REF SINGLE MATERIAL RESPONSE INTERMEDIATE RING
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR BOTTOM RING
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR TOP RING
CROSS-SECTIONAL SHAPE STYLESPECIAL INTERMEDIATE RING
INSIDE DIAMETER1.801 INCHES NOMINAL IN
HEIGHT0.177 INCHES NOMINAL IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR INTERMEDIATE RING
SUBSTITUTES & CROSS-REFERENCES 2
S38421-133BAK-1SSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7133MS-160-5708Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST7M254-133E2?
ST7M254-133E2 is a PACKING ASSEMBLY.
What parts can replace ST7M254-133E2?
There are 2 known substitutes for ST7M254-133E2: S38421-133BAK-1S, 7133MS-160-5708. Substitute compatibility should be verified for your specific system.
What is the NSN for ST7M254-133E2?
ST7M254-133E2 is cataloged in the U.S. Government catalog under NSN 5330-01-089-6065. This indicates validated use in U.S. government and defense supply chains.
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