Threaded Caps and Plugs

Unbrako Pressure Plugs are made to closer tolerances, are generally of higher quality, and almost all have taper threads. When properly used, they seal at pressures to 5000 psi, without a sealing compound (pressure tests are usually at 20,000 psi). They are often used in hydraulic and pneumatic designs. The design of LEVL-SEAL plug permits seating within half a pitch in a normally tapped hole. Conventional plugs have a looser tolerance of a full pitch and usually protrude above the surface. Flush seating improves appearance and adds safety.<ul><li>Precision hex socket with maximum depth for positive wrenching at higher seating torques</li><li>Used properly they will seal at pressures to 5000 psi, without a sealing compound (pressure tests are usually at 20,000 psi).</li><li>Flush seating is achieved through closer control of thread forms, sizes and taper-improves safety and appearance</li><li>Heat treated alloy steel for strength and rounded closely controlled for better sealing</li></ul>