RELATIVE PROPORTIONS OF RINGS IN GROOVES :

A cross section of each spiral retaining ring configuration is illustrated, comparing groove and ring sections in the same diameter bore or shaft. The heavier retaining ring cross-sections are in deeper and wider groove, to provide significantly greater thrust capacity.

Single spiral retaining rings (Spirolox® type)
Light duty series VSM - for shafts	Light duty series VHM - for bores
Light duty series VS - for shafts (in inches)	Light duty series VH - for bores (in inches)
Double spiral retaining rings (Spirolox® type)
Medium duty series ES - for shafts	Medium duty series EH - for bores	Medium-heavy duty series DNS - for shafts for groove DIN 471	Medium-heavy duty series DNH - for bores for groove DIN 472
Medium duty series WS - for shafts (in inches)	Medium duty series WH - for bores (in inches)	Medium-heavy duty series WST - for shafts (in inches)	Medium-heavy duty series WHT - for bores (in inches)	Heavy duty series WSM - for shafts (in inches)	Heavy duty series WHM - for bores (in inches)
Constant section rings
Heavy duty series FS - for shafts for groove DIN 471	Heavy duty series FH - for bores for groove DIN 472
Light duty series XDS - for shafts (in inches)	Light duty series XDH - for bores (in inches)	Medium duty series XAS - for shafts (in inches)	Medium duty series XAH - for bores (in inches)	Heavy duty series FSE - for shafts (in inches)	Heavy duty series FHE - for bores (in inches)
Wave retaining rings
WSW - for shafts (in inches)	WHW - for bore (in inches)
Hoopster retaining rings
HSM - for shafts	HHM - for bores	HHMU - for bores without removing ear
HS - for shafts (in inches)	HH - for bores (in inches)	HHU for bores (in inches) without removing ear