Non-contacting mechanical seals operate with inert gas as a seal face lubricant. They provide a highly durable mechanical seal for demanding refinery and chemical processing applications. Non-contacting sealing technology can also be used to preserve product purity.
John Crane non-contacting mechanical seals can assist companies who are seeking a zero-emission/zero leakage mechanical seal solution to achieve environmental and safety regulations.
Showing 1–11 of 11 Products
Non-contacting, Gas-lubricated Seals for Small-bore Rotating Equipment
The rotating mating ring features micromachined spiral grooves that compress an inert barrier gas and create a lifting force on...
Externally Mounted, Gas-lubricated, Non-contacting Cartridge Double Seal for Pumps
The John Crane Type 2800EH is a non-contacting dual seal for non-turbo small-bore rotating equipment applications, meeting the requirements of...
Externally Mounted, Gas-lubricated, Non-contacting Cartridge Double Seal For Pumps
Unique spiral groove technology patented John Crane spiral grooves are machined into the mating ring faces. A pressurized suitable inert...
Non-contacting Gas-lubricated Dual Cartridge Seal for Large-bore Pumps
The patented technology and tolerant design make these seals ideally suited for applications requiring specially engineered seals with performance even...
Non-contacting, Gas-lubricated Dual Cartridge Seal for Large-bore Pumps
The John Crane Type 2800XP is a non-contacting dual seal for non-turbo, large-bore rotating equipment applications, and complements the John...
Non-contacting, Gas-lubricated Dual Cartridge Seal for Large-bore Pumps
Type 2800XS is the designation used for specially engineered seals designed for operation outside the normal parameters of Types 2800XA and 2800XP...
Gas-lubricated, Non-contacting Single Seal For Cryogenic Pumps
As the worldwide leader in spiral groove technology, John Crane is the first to utilize non-contacting seals...
Non-contacting Dual Gas Seal Cartridge for Pumps
The Type 2874 is an internally pressurized, gas-lubricated, non-contacting dual cartridge seal designed for use in API, ANSI and DIN...
Non-contacting Secondary Containment Seal
The Type 28SCB is a gas-lubricated, non-contacting secondary containment seal, which is applied as a component of a multiple seal...
A fully non-contacting mechanical seal designed specifically for ethane and ethylene pipeline operators.
John Crane’s 8628VL is designed for ethane and ethylene pipeline operators because we know that these materials can change phase in the pipeline.
Non-contacting, Metal Bellows, Outward Pumping Dual Pressurized Gas Lubricated Seal
Reliably sealing high and low temperature process fluids up to 425°C (800°F), the Type 2874HTC incorporates unique HTC (high-temperature, corrosion-resistant) metal bellows technology with non-contacting…