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Technical Data Sheet
D554-257RBPC17 ✓ 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

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: STEEL COMP 304, overall_height: 0.875 INCHES NOMINAL IN, special_features: THREE HOLES 0.1875 IN. DIA CHAMFERED 0.031 IN.

BY 45 DEG; TWO HOLES 0.2090 IN. DIA CSK TO 0.390 IN. DIA IN, style_designator: IRREGULAR, surface_treatment: PASSIVATE, body_inside_diameter: 2.312 INCHES NOMINAL IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-733-5014, 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
D554-257RBPC17
NSN: 5340-00-733-5014
FSC: 5340
CAGE: 34228 — L3 TECHNOLOGIES, INC. DIV L3 KEO (USA)
SPECIFICATIONS
materialSTEEL COMP 304
overall_height0.875 INCHES NOMINAL IN
special_featuresTHREE HOLES 0.1875 IN. DIA CHAMFERED 0.031 IN. BY 45 DEG; TWO HOLES 0.2090 IN. DIA CSK TO 0.390 IN. DIA IN
style_designatorIRREGULAR
surface_treatmentPASSIVATE
body_inside_diameter2.312 INCHES NOMINAL IN
body_outside_diameter2.625 INCHES NOMINAL IN
outside_chamfer_depth0.188 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
outside_chamfer_angle_in_deg45.0
material_document_and_classificationQQ-S-766, CLASS 304, COND A FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-00-733-5014
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D554-257RBPC17 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
OUTSIDE CHAMFER ANGLE IN DEG: 45.0
OUTSIDE CHAMFER DEPTH: 0.188 INCHES NOMINAL IN
MATERIAL: STEEL COMP 304
STYLE DESIGNATOR: IRREGULAR
SURFACE TREATMENT: PASSIVATE
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766, CLASS 304, COND A FED SPEC SINGLE MATERIAL RESPONSE
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE CHAMFER ANGLE IN DEG45.0
SPECIAL FEATURESTHREE HOLES 0.1875 IN. DIA CHAMFERED 0.031 IN. BY 45 DEG; TWO HOLES 0.2090 IN. DIA CSK TO 0.390 IN. DIA IN
OUTSIDE CHAMFER DEPTH0.188 INCHES NOMINAL IN
MATERIALSTEEL COMP 304
STYLE DESIGNATORIRREGULAR
SURFACE TREATMENTPASSIVATE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766, CLASS 304, COND A FED SPEC SINGLE MATERIAL RESPONSE
CASEHARDENING INDICATORNOT CASEHARDENED
BODY INSIDE DIAMETER2.312 INCHES NOMINAL IN
OVERALL HEIGHT0.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
3642Interchangeable
interchangeable cross-reference
interchangeable
2623999G001Interchangeable
interchangeable cross-reference
interchangeable
2640001141096Interchangeable
interchangeable cross-reference
interchangeable
MS51607-1Interchangeable
interchangeable cross-reference
interchangeable
3642-197Interchangeable
interchangeable cross-reference
interchangeable
33642BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D554-257RBPC17?
D554-257RBPC17 is a RETAINER,HELICAL COMPRESSION SPR.
What parts can replace D554-257RBPC17?
There are 16 known substitutes for D554-257RBPC17: 3642, 2623999G001, 2640001141096 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D554-257RBPC17?
D554-257RBPC17 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-733-5014. This indicates validated use in U.S. government and defense supply chains.
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