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Avoiding Spiral wist
To minimize breakaway friction, an O-Ring groove must be wide enough to allow rolling or twisting of the seal. In the long stroke of a reciprocating seal application, this twisting action can strain and eventually tear the rubber, causing a failure mode known as spiral twist.

To prevent spiral twist, the Quad-Ring® seal’s four-lobed configuration is designed to withstand the distortion and extrusion often caused by high or pulsating pressure. To accommodate these forces, a Quad-Ring® seal uses a narrower groove than a comparable O-Ring seal.

Longer Seal Life
Because less squeeze means less friction with the four-lobe design, seals last longer. This means equipment in which the Quad-Ring® seal is installed will operate longer and require less maintenance.

No Parting Line On Sealing Surface
Unlike O-Rings, where partitioning lines are on the sealing surface, Quad-Rings® seal’s parting lines lie between the lobes, away from the sealing surface. This design eliminates the problems of leakage resulting from a parting line’s irregular surface.
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Daemar P/N

Nominal Size I.D.

Nominal Size O.D.

Nominal Thickness W

Actual Size I.D.

Actual Thickness W

4152 N/A 3 1/4 in N/A 3 7/16 in N/A 3/32 in N/A 3.237 in82.22 mm N/A 0.103 in2.62 mm
4153 N/A 3 1/2 in N/A 3 11/16 in N/A 3/32 in N/A 3.487 in88.57 mm N/A 0.103 in2.62 mm
4154 N/A 3 3/4 in N/A 3 15/16 in N/A 3/32 in N/A 3.737 in94.92 mm N/A 0.103 in2.62 mm
4155 N/A 4 in N/A 4 3/16 in N/A 3/32 in N/A 3.987 in101.27 mm N/A 0.103 in2.62 mm
4156 N/A 4 1/4 in N/A 4 7/16 in N/A 3/32 in N/A 4.237 in107.62 mm N/A 0.103 in2.62 mm
4157 N/A 4 1/2 in N/A 4 11/16 in N/A 3/32 in N/A 4.487 in113.97 mm N/A 0.103 in2.62 mm
4158 N/A 4 3/4 in N/A 4 15/16 in N/A 3/32 in N/A 4.737 in120.32 mm N/A 0.103 in2.62 mm
4159 N/A 5 in N/A 5 3/16 in N/A 3/32 in N/A 4.987 in126.67 mm N/A 0.103 in2.62 mm
4160 N/A 5 1/4 in N/A 5 7/16 in N/A 3/32 in N/A 5.237 in133.02 mm N/A 0.103 in2.62 mm
4161 N/A 5 1/2 in N/A 5 11/16 in N/A 3/32 in N/A 5.487 in139.37 mm N/A 0.103 in2.62 mm
4162 N/A 5 3/4 in N/A 5 15/16 in N/A 3/32 in N/A 5.737 in145.72 mm N/A 0.103 in2.62 mm
4163 N/A 6 in N/A 6 3/16 in N/A 3/32 in N/A 5.987 in152.07 mm N/A 0.103 in2.62 mm
4164 N/A 6 1/4 in N/A 6 7/16 in N/A 3/32 in N/A 6.237 in158.42 mm N/A 0.103 in2.62 mm
4165 N/A 6 1/2 in N/A 6 11/16 in N/A 3/32 in N/A 6.487 in164.77 mm N/A 0.103 in2.62 mm
4166 N/A 6 3/4 in N/A 6 15/16 in N/A 3/32 in N/A 6.737 in171.12 mm N/A 0.103 in2.62 mm
4167 N/A 7 in N/A 7 3/16 in N/A 3/32 in N/A 6.987 in177.47 mm N/A 0.103 in2.62 mm
4168 N/A 7 1/4 in N/A 7 7/16 in N/A 3/32 in N/A 7.237 in183.82 mm N/A 0.103 in2.62 mm
4169 N/A 7 1/2 in N/A 7 11/16 in N/A 3/32 in N/A 7.487 in190.17 mm N/A 0.103 in2.62 mm
4170 N/A 7 3/4 in N/A 7 15/16 in N/A 3/32 in N/A 7.737 in196.52 mm N/A 0.103 in2.62 mm
4171 N/A 8 in N/A 8 3/16 in N/A 3/32 in N/A 7.987 in202.87 mm N/A 0.103 in2.62 mm
4172 N/A 8 1/4 in N/A 8 7/16 in N/A 3/32 in N/A 8.237 in209.22 mm N/A 0.103 in2.62 mm
4173 N/A 8 1/2 in N/A 8 11/16 in N/A 3/32 in N/A 8.487 in215.57 mm N/A 0.103 in2.62 mm
4174 N/A 8 3/4 in N/A 8 15/16 in N/A 3/32 in N/A 8.737 in221.92 mm N/A 0.103 in2.62 mm
4175 N/A 9 in N/A 9 3/16 in N/A 3/32 in N/A 8.987 in228.27 mm N/A 0.103 in2.62 mm
4176 N/A 9 1/4 in N/A 9 7/16 in N/A 3/32 in N/A 9.237 in234.62 mm N/A 0.103 in2.62 mm
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