+3 O RING 8" TWIST-N-SEAL 71702021 $16.99 In stock Quantity: 1 Add to Bag Product Details UPC: 792176437741 Brand: Hobie Part #: 71702021 Hobie O Ring 8 Inch Twist-N-Seal Replacement 8 inch O-ring for Hobie 8" Twist-N-Seal Hatches. Hobie Twist-N-Seal Hatch makes accessing and storing gear in your kayaks hull easier and dryer than ever! Rubber O-ring system locks and seals quickly. Save this product for later Favorite