Side-by-Side Comparison
Washers & Retaining Rings
Retaining Rings & Circlips vs. Sealing & Crush Washers
Comparing 2 standards across 17 specifications. 17 key differences identified.
Comparing:
Retaining Rings & Circlips
Sealing & Crush Washers
Retaining rings (circlips) provide removable shoulder stops in machined shaft and bore grooves, standardized under DIN 471 (External shaft circlips), DIN 472 (Internal bore circlips), and DIN 6799 (Radial E-clips).
Sealing crush washers create leak-tight fluid seals under compression on hydraulic fittings and automotive drain plugs, standardized under DIN 7603 (Form A solid copper/aluminum, Form C copper-asbestos/elastomer, and bonded Dowty seals).
Specification Comparison Table
17 Parameters| Parameter / Spec | ||
|---|---|---|
|
Governing Standards
|
DIN 471 (External) / DIN 472 (Internal) / DIN 6799 (E-Clip) | DIN 7603 Form A (Solid) / ISO 1179 / SAE J514 |
|
DIN 471 10mm External Circlip
|
Shaft Dia: 10 mm | Groove Dia: 9.6 mm | Groove Width: 1.1 mm | Ring Thickness: 1.0 mm | — |
|
DIN 471 15mm External Circlip
|
Shaft Dia: 15 mm | Groove Dia: 14.3 mm | Groove Width: 1.1 mm | Ring Thickness: 1.0 mm | — |
|
DIN 471 20mm External Circlip
|
Shaft Dia: 20 mm | Groove Dia: 19.0 mm | Groove Width: 1.3 mm | Ring Thickness: 1.2 mm | — |
|
DIN 471 25mm External Circlip
|
Shaft Dia: 25 mm | Groove Dia: 23.9 mm | Groove Width: 1.3 mm | Ring Thickness: 1.2 mm | — |
|
DIN 472 20mm Internal Circlip
|
Bore Dia: 20 mm | Groove Dia: 21.0 mm | Groove Width: 1.1 mm | Ring Thickness: 1.0 mm | — |
|
DIN 472 25mm Internal Circlip
|
Bore Dia: 25 mm | Groove Dia: 26.2 mm | Groove Width: 1.3 mm | Ring Thickness: 1.2 mm | — |
|
DIN 6799 E-Clip (Radial Installation)
|
Installed radially with push tool without requiring axial shaft access | — |
|
Standard Material
|
Spring Steel (C67S / C75S / 50CrV4) hardened to 44–53 HRC, Stainless AISI 301/304 | — |
|
M10 Sealing Washer (DIN 7603)
|
— | ID: 10.0 mm | OD: 14.0 mm | Thickness: 1.0 mm (Copper / Aluminum) |
|
M12 Sealing Washer (Oil Drain Plug)
|
— | ID: 12.0 mm | OD: 16.0 mm to 18.0 mm | Thickness: 1.5 mm |
|
M14 Sealing Washer (Standard Oil Drain)
|
— | ID: 14.0 mm | OD: 18.0 mm to 20.0 mm | Thickness: 1.5 mm |
|
M16 Sealing Washer (Gearbox/Diff)
|
— | ID: 16.0 mm | OD: 22.0 mm | Thickness: 1.5 mm |
|
M18 Sealing Washer
|
— | ID: 18.0 mm | OD: 24.0 mm | Thickness: 1.5 mm |
|
M22 Sealing Washer
|
— | ID: 22.0 mm | OD: 27.0 mm | Thickness: 1.5 mm |
|
Bonded Dowty Seal (Metal + NBR/FKM)
|
— | Steel outer ring with vulcanized inner trapezoidal elastomeric lip (Self-centering) |
|
Plastic Yield Mechanism
|
— | Ductile copper/aluminum crushes plastically into machining micro-grooves upon torquing |