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1684-LPD — SEAL,PLAIN

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1684-LPD: SEAL,PLAIN.

The SEAL,PLAIN is a the manufacturer industrial component. Key specifications include criticality_code_justification: FEAT. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-549-7969, 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
1684-LPD
NSN: 5330-00-549-7969
NIINs: 005497969, 012796785
FSC: 5330 — Packing and Gasket Materials
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
special_featuresMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
criticality_code_justificationFEAT
NSN5330-00-549-7969
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1684-LPD 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 250.0 FAHRENHEIT DEGF
•
SEAL WIDTH: 0.625 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 6.750 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SINGLE LIP
•
ACCOMMODATED SHAFT DIAMETER: 5.500 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC SEALING ELEMENT
•
CONSTRUCTION: SOLID
TECHNICAL CHARACTERISTICS
TEMP RATING-40.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
SEAL WIDTH0.625 INCHES NOMINAL IN
HOUSING BORE DIAMETER6.750 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESINGLE LIP
ACCOMMODATED SHAFT DIAMETER5.500 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
CONSTRUCTIONSOLID
SUBSTITUTES & CROSS-REFERENCES 5
5363426-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
1684 LUP H1/L5Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
1684LPDH1L5Reference document
Same NSN cross-reference
Reference document — Secondary reference
PL316464PC142Reference document
Same NSN cross-reference
Reference document — Secondary reference
5363361 PIECE 89Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1684-LPD?
1684-LPD is a SEAL,PLAIN.
What parts can replace 1684-LPD?
There are 5 known substitutes for 1684-LPD: 5363426-1, 1684 LUP H1/L5, 1684LPDH1L5 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1684-LPD?
1684-LPD is cataloged in the U.S. Government catalog under NSN 5330-00-549-7969. 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.