Stem O-Ring for 1.5 in. Tri-Clamp Sample Valve Stem O-Ring for 1.5 in. Tri-Clamp Sample Valve Product form SKU: H585D $2.19 Quantity Add to cart Free Shipping on orders over $59 This item ships freight only. You're getting the best possible deal on this item, thanks to our Minimum Advertised Price (MAP) policy. This item is available for Pre-Order. Full payment is required to reserve stock.