| Type |
P/N Suffix |
Reference Spec |
Description |
| Carbon Spring Steel |
(none) |
SAE 1070-1090 |
Standard material for spiral retaining rings. |
| Stainless Steel |
S |
AMS-5866, 302, 316, 17-7 |
Standard grade for spiral rings when stainless is ordered. Withstands ordinary rusting and immune to all food stuffs. |
| Beryllium Copper |
M |
ASTM B197 (Chemical composition only) |
Non-magnetic. Immune to corrosion from sea water or sea air and to most alkaline solutions. Has poor resistance to compounds of amonia, sulphur and mercury. |
| A286 Austenetic Alloy |
SN |
AMS-5810 |
Ideal for applications where retaining ring experiences temperatures up to 1000 degrees F. |
| Stainless Steel 17-7 PH/C |
SC |
AMS-5529 |
Primarily used when high strength and corrosion resistance are required up to 650 degrees F. |
| Stainless Steel AISI 316 |
SB |
ASTM A313 1 |
Similar properties and heat resistance to 302 stainless. Added corrosion resistance over 302 stainless. |
| Inconel Alloy X-750 |
INX |
AMS-5699 / AMS-5698 |
Used in high temperature corrosive environments. |
| Type |
P/N Suffix |
Reference Spec |
Description |
| Oil |
(none) |
|
Default for Carbon Steel rings. Oil acts as a corrosion preventitive for transport and storage. |
| Zinc Plating |
Z |
QQ-Z-325 Class 3, Type I |
Bright silver finish is popular where appearance is a factor. |
| Zinc Plating Dichromate |
ZD |
QQ-Z-325 Class 3, Type II |
Will slow or prevent formation of white corrosive matter on surfaces exposed to water. Bronze to brown in color. |
| Phosphate Coat |
L |
MIL-DTL-16232, Type Z, Class 2 |
Better corrosion resistance than black oxide. Not suited for severe conditions. |
| Passivation |
P |
QQ-P-35 |
Used on stainless to remove particles from material surface. Theoretically improves corrosion resistance of the material. |
| Black Oxide |
BX |
MIL-C-13924 Class 1 |
Produces a uniform satin black finish on carbon steel. Its corrosion resistance is inferior to phosphate. Cannot be applied to stainless steel. |
| Cadmium Plating |
C |
AMS QQ P-416, Type II, Class 1 |
Cadmium plating. Provides a limited amount of corrosion resistance. |
| Cadmium Plating Dichromate |
CD |
AMS QQ P-416, Type II, Class 2 |
Cadmium plating with a dichromate dip. Ideal for surfaces exposed to stagnant water, salt water, marine atmospheres. |
| Cadmium Plating Irridite |
CI |
AMS QQ P-416, Type II, Class 1 |
Cadmium plating with an iridite dip (clear). |
