600-104-4 BURKE INDUSTRIES PUROSIL DIV (07096)
CONFIRMEDNONMETALLIC SPECIAL SHAPED SECTI
design-control reference — the reference that controls this item of supply (RNCC 3 · RNVC 2)
Consumables & expendables · Spec-Crosswalk
NONMETALLIC SPECIAL SHAPED SECTI
Stock number · one item of supply — the parts codified against it, and the stock numbers it substitutes for
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Purchasable unitnone derived yet
Part number4 approved sources
You are here · Stock number9390-01-718-1331
Specificationnone cited
Approved sources
Every maker's reference the catalogue files against this item of supply — the parts someone holding this number can use. The design-control reference is the one that controls the item; a secondary reference is a real codified fact and a weaker one.
E-4742-4 KIRKHILL INC (3DBN7)
CONFIRMEDNONMETALLIC SPECIAL SHAPED SECTI
design-control reference — the reference that controls this item of supply (RNCC 3 · RNVC 2)
Also filed by the same company as E-4742-4 (75345) — one product, several catalogue rows.
PX41771-4 MECHANICAL RUBBER PRODUCTS COMPANY, (76376)
CONFIRMEDNONMETALLIC SPECIAL SHAPED SECTI
design-control reference — the reference that controls this item of supply (RNCC 3 · RNVC 2)
GS179B4 RUBBERCRAFT CORPORATION OF CALIFORN (77969)
POSSIBLENONMETALLIC SPECIAL SHAPED SECTI
codified reference — recorded against this stock number; the catalogue grade is not held
Historical & informational references
Numbers the catalogue records against this item but marks as not for procurement — withdrawn entries, information-only listings, drawings, and references that need more than the number to identify the item. If you arrived holding one of these, this is the item it points to; the sources above are what can actually be used.
E-4742-4 BURKE INDUSTRIES INC (11960)
WITHDRAWNNONMETALLIC SPECIAL SHAPED SECTI
no longer valid — this reference was withdrawn from the catalogue record (RNVC 9) — the history trail: hold it, do not buy to it
GS179B4 NORTHROP GRUMMAN SYSTEMS CORPORATION (26512)
WITHDRAWNNONMETALLIC SPECIAL SHAPED SECTI
no longer valid — this reference was withdrawn from the catalogue record (RNVC 9) — the history trail: hold it, do not buy to it
NA2-4043 THE BOEING COMPANY (43999)
WITHDRAWNRUBBER SHEET,SOLID
no longer valid — this reference was withdrawn from the catalogue record (RNVC 9) — the history trail: hold it, do not buy to it
Substitutes — other stock numbers
Codified interchangeability across stock numbers (FLIS I&S), with the catalogue's order of use where it states one.
600-104-4 BURKE INDUSTRIES PUROSIL DIV
CONFIRMEDNONMETALLIC SPECIAL SHAPED SECTI
NSN 9390-01-718-1331
OVERALL WIDTH: 1.600 INCHES NOMINAL LENGTH: 1.600 INCHES NOMINAL BASE FLANGE THICKNESS: 0.080 INCHES NOMINAL MATERIAL: RUBBER SYNTHETIC
E-4742-4 KIRKHILL INC
CONFIRMEDNONMETALLIC SPECIAL SHAPED SECTI
NSN 9390-01-718-1331
OVERALL WIDTH: 1.600 INCHES NOMINAL LENGTH: 1.600 INCHES NOMINAL BASE FLANGE THICKNESS: 0.080 INCHES NOMINAL MATERIAL: RUBBER SYNTHETIC
E-4742-4 KIRKHILL INC
CONFIRMEDNONMETALLIC SPECIAL SHAPED SECTI
NSN 9390-01-718-1331
OVERALL WIDTH: 1.600 INCHES NOMINAL LENGTH: 1.600 INCHES NOMINAL BASE FLANGE THICKNESS: 0.080 INCHES NOMINAL MATERIAL: RUBBER SYNTHETIC
PX41771-4 MECHANICAL RUBBER PRODUCTS COMPANY,
CONFIRMEDNONMETALLIC SPECIAL SHAPED SECTI
NSN 9390-01-718-1331
OVERALL WIDTH: 1.600 INCHES NOMINAL LENGTH: 1.600 INCHES NOMINAL BASE FLANGE THICKNESS: 0.080 INCHES NOMINAL MATERIAL: RUBBER SYNTHETIC
Stated characteristics
The codification record's own dimensions and material statements — official, and public by nature.
CROSS-SECTIONAL SHAPE STYLEROUND, HOLLOW COREFLIS characteristics (MRC)
TEMP RATING-53.0 FAHRENHEIT AND 93.0 FAHRENHEITFLIS characteristics (MRC)
OVERALL WIDTH1.600 INCHES NOMINALFLIS characteristics (MRC)
LENGTH1.600 INCHES NOMINALFLIS characteristics (MRC)
INSIDE RADIUS0.590 INCHES NOMINALFLIS characteristics (MRC)
END ITEM IDENTIFICATIONSPECIAL, AIR VEHICLE, AIRCRAFTFLIS characteristics (MRC)
PHYSICAL FORMSOLIDFLIS characteristics (MRC)
BASE FLANGE THICKNESS0.080 INCHES NOMINALFLIS characteristics (MRC)
OUTSIDE RADIUS0.750 INCHES NOMINALFLIS characteristics (MRC)
FIRST FILLET RADIUS0.125 INCHES NOMINALFLIS characteristics (MRC)
PART NAME ASSIGNED BY CONTROLLING AGENCYSHAPE, BULB EXTRUDED, RUBBERFLIS characteristics (MRC)
MATERIALRUBBER SYNTHETICFLIS characteristics (MRC)
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6855 CL. 2, GR. 60 MIL SPEC SINGLE MATERIAL RESPONSEFLIS characteristics (MRC)
Take the family with you
The whole group as CSV — members, makers, stock numbers and order of use.
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The monthly allowance for this address is used — the pattern reads as catalogue work, not a line to settle.
Whole-catalogue work is what Stage 1(a) is for: every line human-checked against the cited evidence, discrepancies annotated, back inside 24 hours. Free searching stays free — this gate only catches bulk pulls.
Staying inside the regulation — routes from candidate to approved
Codification and qualification say who vouches for a part — they are not installation eligibility. Under EASA Part-21, eligibility flows from the approved design (type design / IPC) or an approved change; under Part-145, acceptance needs an EASA Form 1 or, for genuine standard parts, conformity traceable to the officially recognised standard (145.A.42).
- Classify the part. Is it a GENUINE standard part? If the IPC/CMM references only a public specification (AN/MS/NAS/SAE-AS/ISO/EN) with no OEM source-control drawing, buy at source with conformity traceable to that standard.
- Check for an approved alternate. The IPC/CMM/vendor list may already carry an alternate part number or vendor code — an already-approved alternate needs no new approval.
- Ask the design approval holder. Request the source-control data, written equivalence, or addition of the alternative source to the approved data. Document a refusal.
- Raise a design change. Via a Part-21J DOA (or EASA/ADOA): a 21.A.95 minor change adding the alternate to the approved data, backed by an identicality/equivalence file — dimensions, material, class, load rating, lubricant/seal, corrosion protection, acceptance criteria. Critical applications escalate to major change/STC.
- FAA-PMA / BASA path. Where the product is also FAA-certificated: PMA parts reach EASA aircraft under the BASA/TIP (non-critical directly; critical via EASA-validated STC).
- Production, release, traceability. Approved parts are produced under a POA, released on an EASA Form 1 (marked EPA where applicable), with EN/AS 9120-grade traceability into Part-145/CAMO acceptance.
Stage 1(a): we assemble the equivalence/identicality starter file — the cited evidence this graph holds, shaped for your DOA or compliance department to take forward. See pricing.
Regulatory explainer, not legal advice: paragraph numbers, derogations and the BASA/TIP revision change — verify against the current consolidated Regulation (EU) 748/2012, the EASA Easy Access Rules and the current TIP, and engage your DOA and competent authority early.
Source: DLA Logistics Information Services (FLIS) · cycle 2026-07 · official codification
This crosswalk identifies candidate equivalents with cited evidence. It is not an airworthiness approval. Substitution decisions remain subject to your organisation’s procurement and engineering approval process and the governing maintenance data (AMM/CMM/SRM/CML/OMAT).