BS ISO 6622-1:2003

Foreword
Introduction
1 Scope
2 Normative references
3 Overview
4 Ring types and designation examples
   4.1 Type R - Straight faced rectangular ring
   4.2 Type B - Barrel faced rectangular ring
   4.3 Type BA - Asymmetrical barrel faced rectangular
        h[1] >= 1,5 mm
   4.4 Type M - Taper faced rectangular ring
5 Common features
   5.1 Type R - Straight faced rectangular ring
   5.2 Type B - Barrel faced rectangular ring
   5.3 Type BA - Asymmetrical barrel faced rectangular ring
        h[1] >= 1,5 mm
   5.4 Type M - Taper faced rectangular ring
   5.5 Type R, B, BA and M rings (positive twist type) - Internal
   bevel or internal step top side
   5.6 Type M rings (negative twist type), tapers M3 to M5 -
        Internal bevel or internal step bottom side
   5.7 Type R, B, BA and M rings (positive twist type), and
        Type M rings (negative twist type) - Defined twist
        feature (IFV and IFVU)
   5.8 Type R, B and BA rings - Outside chamfered edges (KA)
   5.9 Type R, B, BA and M rings - Inside chamfered edges (KI)
   5.10 Type R, B and BA rings - Outside and inside chamfered
        edges (KA + KI)
   5.11 Type R, B, BA and M rings (fully faced, semi-inlaid and
        inlaid) - Plating/coating thickness
6 Force factors
7 Dimensions
Bibliography

Describes the essential dimensional features of rectangular rings made of cast iron, Types R, B, BA and M, having diameters up to and including 200 mm, used in reciprocating internal combustion piston engines.