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ST1946-019 — PACKING,PREFORMED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ST1946-019: PACKING,PREFORMED.

The PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM OVERALL, temp_rating: -40.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL, peripheral_diameter: 0.926 INCHES MINIMUM AND 0.956 INCHES MAXIMUM IN, center_hole_diameter: 0.792 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN, elongation_percentage: 120 MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-191-2524, 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
ST1946-019
NSN: 5330-01-191-2524
FSC: 5330 — Packing and Gasket Materials
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM OVERALL
temp_rating-40.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
peripheral_diameter0.926 INCHES MINIMUM AND 0.956 INCHES MAXIMUM IN
center_hole_diameter0.792 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN
elongation_percentage120 MAXIMUM
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
cross-sectional_shape_styleO-RING
cross_section_outside_diameter0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
NSN5330-01-191-2524
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ST1946-019 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: -40.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: O-RING
•
ELONGATION PERCENTAGE: 120 MAXIMUM
•
PERIPHERAL DIAMETER: 0.926 INCHES MINIMUM AND 0.956 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.792 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN
•
CROSS SECTION OUTSIDE DIAMETER: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
TEMP RATING-40.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM OVERALL
CROSS-SECTIONAL SHAPE STYLEO-RING
ELONGATION PERCENTAGE120 MAXIMUM
PERIPHERAL DIAMETER0.926 INCHES MINIMUM AND 0.956 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.792 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN
CROSS SECTION OUTSIDE DIAMETER0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROCARBON CLASS FPM OVERALL
SUBSTITUTES & CROSS-REFERENCES 7
5330PL1668913Reference document
Same NSN cross-reference
Reference document — Informative reference only
M83485/1-019Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
2-019 V0835-75Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AMS-R-83485/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
V0835 2-019Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MIL-R-83485/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST1946-019?
ST1946-019 is a PACKING,PREFORMED.
What parts can replace ST1946-019?
There are 7 known substitutes for ST1946-019: 5330PL1668913, M83485/1-019, 2-019 V0835-75 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST1946-019?
ST1946-019 is cataloged in the U.S. Government catalog under NSN 5330-01-191-2524. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.