Spiral Rings - Internal - Medium-Heavy Duty
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Product features, properties and information

Includes Series AMI / WHT / Spirolox RRT - Spring Steel and Stainless Steel.
Originally designed to fit NAS50-51 grooves, this series is a popular OEM specification.
This two/three turn design is easier to install than the heavy duty RRN option.
Equivalent to Associated Spring: AMI, Smalley: WHT, Spirolox and Ramsey: RRT

All dimensions on this website are shown in mm unless otherwise indicated.
Click on the linked part numbers in the table below for more details.

Diagram - Spiral Rings - Internal - Medium-Heavy Duty

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Bore (Db)
Free Outside Dia. (Dr)
Radial Wall (S)
Thickness (T)
Groove Dia. (Dg)
Groove Depth (d)
Groove Width (W)
Material Part Number
(Click for prices)
(0.750 in.)
- - Spring Steel RRT-0750
(1.023 in.)
(1.087 in.)
1.80 - 2.01
(0.071 in.)
1.02 - 1.12
(0.040 in.)
27.31 - 27.51
(1.075 in.)
(0.028 in.)
1.17 - 1.24
(0.046 in.)
302 Stainless Steel RRT-102-S021
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