Our Solid Black Long End Plug is suitable for low- and high-pressure applications. They are compatible with any common HPLC solvent. Mainly used to prevent HPLC columns from drying out, this plug is wisely made of hard nylon and Multiple Ribs design for a tight fit. The Solid Black Long End Plug is also used in different engine systems to prevent breakage at extreme load conditions by offering rigid covering. It has heavy end walls for Abrasion Resistance & durability.