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ND-425
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Ring Specs
(D) Free Diameter: 4.429 +0.093 / -0.000 in.
(t) Thickness: 0.078 +0.002 / -0.002 in.
(b) Radial Wall: 0.218 +0.005 / -0.005 in.
Groove Specs:
(B) Application Diameter: 4.250 in.
(G) Groove Diameter: 4.394 +0.006 / -0.006 in.
(W) Groove Width: 0.086 +0.005 / -0.000 in.
Groove Depth: 0.072 in.
Other Specs
Approximate Weight per 1000:
(GAPmax) Maximum Gap:1.062in.
(GAPmin) Minimum Gap:0.625in.
(Pg) Theoretical Thrust Load Capacity - Groove Yield:
Notes: Yield Strength of Groove Material (Ys): 45,000 psi. Calculated using a safety factor (K) of 4

Equation:
Pg = [ B * d * Ys * pi ] / K
    = [ (4.250 in.) * (0.072 in.) * (45,000 psi) * 3.14 ] / 4		10,809lbs.
(Pr) Theoretical Thrust Load Capacity - Ring Shear:
Notes: Ring Material: Carbon Spring Steel (SAE 1060-1095). Shear Strength of Ring Material (Ss): 153,000 psi. Calculated using a safety factor (K) of 3

Equation:
Pr = [ B * t * Ss * pi ] / K
    = [ (4.250 in.) * (0.078 in.) * (153,000 psi) * 3.14 ] / 3		53,086lbs.
Industry Equivalent Part Number(s):
ND-425