Replace John Crane Type 1

The John Crane Type 1 has long been the industry benchmark for non-pusher, elastomeric bellows seals in pumping systems worldwide. Our equivalent series is engineered to be 100% dimensionally interchangeable with the original, offering a robust alternative that reduces MRO costs without compromising on performance.

Designed for the most demanding environments, this seal excels in centrifugal pumps, rotary pumps, mixers, and agitators. By leveraging advanced material science and precision manufacturing, we provide a sealing solution that ensures maximum uptime and adheres to the highest ISO 3069 and ANSI standards.

• Self-Aligning Capability: The flexible rubber bellows automatically compensates for abnormal shaft end-play, run-out, and primary ring wear, ensuring consistent face contact.
• Non-Clogging Single Spring: Unlike multi-spring designs, the heavy-duty single coil spring resists clogging in viscous or particle-laden fluids, maintaining seal integrity in "dirty" services.
• Seamless Interchangeability: Fully compatible with the L3 operating length of John Crane Type 1, as well as Flowserve Pac-Seal 51, AESSEAL B01, and Vulcan Type 10.
• Torque-Free Bellows: The drive is transmitted through the mechanical drive notches rather than the bellows, preventing over-stressing of the elastomer and extending its service life.
• Application Versatility: Capable of handling a wide array of fluids, from potable water and lubrication oils to mild chemical slurries, depending on the elastomer configuration.

• Spring unit averted from the product so no sticking and clogging of the springs
• Safe operation (no fractures) because of seal face locking by square pin
• Suitable for pressure reversals
• Operation in vacuum without additional seat locking possible
• No damage of the shaft by a dynamically loaded O-Ring
• Small installation sizes
• Best suitable for conversions, no adaptations of the pump
• Insensitive to solid containing and abrasive media
• Advantages of a balanced seal even with plain shafts
• Insensitive to shaft movements because of the stationary design

• Water and waste water technology
• Chemical industry
• Refining technology
• Dirty, abrasive and solid containing media
• Fugitive hydrocarbons (no API seal!)
• Sticky and stringy media
• Chemical standard pumps
• Sewage pumps

Port of Loading: Shanghai

Shipping Method: DHL, UPS, FEDEX, TNT, etc

Payment Terms: T/T, Western Union, Money Gram

• OEM/ODM orders are available for our factory
• Accept customized mechanical seals according to your drawing or requirements
• Small quantity is accepted
• Provides excellent quality with competitive price