OC-101 Large Cone
OC-102 Small Cone

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A unique device for measuring O-Rings up to 8” ID. Use the base of the cone for determining the cross section of the O-Ring. Then simply drop the O-Ring over the cone and read the size number above the O-Ring.

For O-Rings 3” to 8” in diameter place the coiled tape inside the O-Ring and expand it firmly. Read the size number that is clearly marked on the tape.

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