We are pleased to announce a successful 200-hour-plus test of a 10.49-inch (266.45mm) BDRP Seal™ at 100 rpm and 1,500 psi differential pressure. The used test seal is still in […]
Category: Kalsi Seals
Two 1,500-psi tests of 10.49-inch BDRP Seals™ at 75 rpm
BDRP Seals (Figure 1) are Plastic Lined rotary seals that were developed to provide hydrodynamic interfacial lubrication in either direction of differential pressure and either direction of rotation. This design […]
15 & 100 psi reverse pressure testing with drilling fluid and runout
In June of 2019 we reported on the successful testing of 3.00” (76.2mm) PN 701-10-11 rotary shaft seals in “reverse pressure” conditions where the pressure of the drilling fluid was […]
368-hour, 10,000 psi test of a washpipe assembly
On July 26, 2018 Kalsi Engineering announced a collaborative effort with Packard International, Inc. to provide high pressure washpipe assemblies to the oilfield drilling industry. On May 6, 2019 we announced the […]
Differential pressure comparison with a new generation mud motor seal
We recently blogged about a new generation of pressure retaining mud motor seals. These Extra Wide mud motor seals are designed to operate in mud motors that incorporate larger extrusion […]
Announcing important advances in mud motor pressure retaining seals
Review of a mud motor design trend Mud motor sealed bearing assemblies (Figure 1) typically have a “pressure retaining seal” location where a rotary seal is exposed to the pressure […]
A 2,300 psi rotary shaft seal test with 0.015” radial extrusion gap clearance
A pair of 10.49” PN 682-21-303 extra wide type A Plastic Lined Seals™ was tested for 100 rotating hours at 2,300 psi (15.85 MPa) and 45 rpm (123.6 sfpm) using […]
Testing a 10.500” RCD seal at 1,500 psi and 50 rpm
Our KLS-brand high pressure lip seals were originally offered for sale after successful 1,000 psi testing of 3.375” diameter seals at 543 surface feet per minute (sfpm), duplicating the surface […]
Rotary shaft seal testing with drilling fluid and 100 psi ‘reverse’ pressure
Kalsi Engineering has tested various prototype rotary shaft seal designs where the pressure of the drilling fluid is 100 psi (6.89 bar) greater than the pressure of the seal lubricant. […]
Video showing a floating backup ring in operation
Introduction to high pressure seal implementation challenges Mechanical designers face five significant challenges when implementing high pressure rotary seals: shaft runout; shaft misalignment; shaft deflection; pressure-related hardware deformation; and the […]
