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 […]
Rotary Seal Blog
Blogging is a way for Kalsi Engineering to provide up to date information more quickly than we can through traditional information channels like our seal handbook and static web pages. Here you will learn how we are working to solve industry problems through posts about new rotary seal products and posts about testing directed at specific industry problems and applications. You will also learn about the people who make it all happen, as we highlight the achievements and milestones in their lives. Visit our blog for the latest information on Kalsi-brand rotary seals and other Kalsi Engineering products and services.
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 […]
An extreme high-pressure oil seal test (320 hours, 9,500 to 9,800 psi)
test This video highlights extreme high pressure rotary oil seal testing. The test was conducted at 141.4 sfpm (0.72 m/s) with an ISO 68 viscosity grade oil at 9,500 to […]
