... ,neutral,easy to apply. 2.Outstanding weatherproofing ability,more than ten years. HY-2000 SILICONE WEATHERPROOFING SEALANTPRODUCT FEATURES:1.One part,room ... temperature cure,neutral,easy to apply.2.Outstanding weatherproofing ability,more than ten years of service life. Virtually unaffected ... place,the shelf life is 9 months. HY-2000 SILICONE WEATHERPROOFING SEALANT