Outer Window Seal (327005) by OER®. Vent window rubber seals. Set includes two "C" weatherstrip pieces and two vertical weatherstrip pieces which is enough for both vent windows. Restore your vehicle’s look to its former glory with superior OER body parts. With these top-notch quality reproductions, you’ll get the ultimate in authentic quality and original appearance at an attractive price. Original Equipment Reproduction - OER - is the leading manufacturer and distributor of quality classic automotive restoration parts and accessories. OER products are meticulously manufactured to replicate the OEM appearance, quality and fit that meets or exceeds the original factory specifications.