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RR9 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL, design_type: SOLID, end_diameter: 0.7810 INCHES MINIMUM AND 0.7910 INCHES MAXIMUM IN, bore_diameter: 0.4340 INCHES MINIMUM AND 0.4440 INCHES MAXIMUM IN, overall_height: 0.4450 INCHES MINIMUM AND 0.4850 INCHES MAXIMUM IN, special_features: MATL-STEEL QQ-S-633,C1010 TO C1022. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-374-9346, 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
RR9
NSN: 5340-00-374-9346
FSC: 5340
CAGE: 77220 — DANA CORP ENGINE PRODUCTS DIV (USA)
SPECIFICATIONS
materialSTEEL
design_typeSOLID
end_diameter0.7810 INCHES MINIMUM AND 0.7910 INCHES MAXIMUM IN
bore_diameter0.4340 INCHES MINIMUM AND 0.4440 INCHES MAXIMUM IN
overall_height0.4450 INCHES MINIMUM AND 0.4850 INCHES MAXIMUM IN
special_featuresMATL-STEEL QQ-S-633,C1010 TO C1022
style_designatorSEAT
features_providedCASEHARDENED
first_step_length0.0680 INCHES MINIMUM AND 0.0880 INCHES MAXIMUM IN
counterbore_length0.3750 INCHES NOMINAL IN
first_step_diameter1.0990 INCHES MINIMUM AND 1.1090 INCHES MAXIMUM IN
chamfer_angle_in_deg11.0
NSN5340-00-374-9346
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: RR9 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
•
COUNTERBORE DIAMETER: 0.9280 INCHES MINIMUM AND 0.9480 INCHES MAXIMUM IN
•
SECOND STEP DIAMETER: 1.4020 INCHES MINIMUM AND 1.4180 INCHES MAXIMUM IN
•
COUNTERSINK DIAMETER: 0.5640 INCHES MINIMUM AND 0.5840 INCHES MAXIMUM IN
•
FEATURES PROVIDED: CASEHARDENED
•
STYLE DESIGNATOR: SEAT
•
DISTANCE FROM END TO FIRST STEP: 0.2690 INCHES MINIMUM AND 0.3490 INCHES MAXIMUM IN
•
SECOND COUNTERBORE DIAMETER: 0.9375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
COUNTERBORE DIAMETER0.9280 INCHES MINIMUM AND 0.9480 INCHES MAXIMUM IN
SECOND STEP DIAMETER1.4020 INCHES MINIMUM AND 1.4180 INCHES MAXIMUM IN
COUNTERSINK DIAMETER0.5640 INCHES MINIMUM AND 0.5840 INCHES MAXIMUM IN
SPECIAL FEATURESMATL-STEEL QQ-S-633,C1010 TO C1022
FEATURES PROVIDEDCASEHARDENED
STYLE DESIGNATORSEAT
DISTANCE FROM END TO FIRST STEP0.2690 INCHES MINIMUM AND 0.3490 INCHES MAXIMUM IN
SECOND COUNTERBORE DIAMETER0.9375 INCHES NOMINAL IN
COUNTERBORE LENGTH0.3750 INCHES NOMINAL IN
SECOND COUNTERBORE LENGTH0.1875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
E539Interchangeable
interchangeable cross-reference
interchangeable
VS95Interchangeable
interchangeable cross-reference
interchangeable
0HA6513AInterchangeable
interchangeable cross-reference
interchangeable
SR216Interchangeable
interchangeable cross-reference
interchangeable
VS371Interchangeable
Same NIIN cross-reference
interchangeable
59966R1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RR9?
RR9 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace RR9?
There are 9 known substitutes for RR9: E539, VS95, 0HA6513A and 6 more. Substitute compatibility should be verified for your specific system.
Is RR9 still available?
RR9 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026