21O7312      This Item Up For Offer is a     US NAVY SUBMARINES    AIREX    P/N 265102703    FAN VENTILATION ISOLATING MOUNTING RING    ( 2 ) STEEL PLATED RINGS WITH A NON METALLIC RED RUBBER MATERIAL IN BETWEEN    3.865" DIA.    3.245" ID.    .300" OA THICK   WITH .100" WIDE SOFT RED RUBBER MATERIAL IN BETWEEN RINGS    ( 2 ) .135" ID. SCREW HOLES IN BOTTOM RING AND ( 2 ) .220"  HOLES IN TOP RING  Condition New and Unused, From Surplus Old Stock.    Made in the USA by AIREX CORP..

NOTE: TINKERERS, INVENTORS AND MECHANICS, IF YOU CAN USE THIS ITEM IN YOUR NEXT PROJECT, FEEL FREE TO MAKE AN OFFER ON ALL, OR A LESSER AMOUNT. DON'T LET THE PRICE SCARE YOU. I MIGHT SAY YES.

I WELCOME YOUR INTEREST IN THIS ONE, AND ALL MY OTHER ITEMS.