Thank you for posting your feedback. We are sorry to see your low star review on DAP All-Purpose 100% Silicone Adhesive Sealant. This product is only intended for use in submerged applications when applied to glass. Likewise, the product must be applied to clean/dry surfaces and permitted to fully cure before it can be submerged. For submerged repairs on other materials, the use of a two-component epoxy would typically be recommended. Even these more specialized products do not typically result in a permanent repair when used as you describe.