Flexaseal

Split Cartridge Seals

Flexaseal offers Style 85 and Style 85M split cartridge mechanical seals. These split seals are unique in the fact that they only require two pieces to be handled for installation. The sealing faces are safely secured in the cartridge halves and cannot be cocked, chipped, or scarred. Every split cartridge mechanical seal is completely assembled and pressure tested before it is shipped. The split cartridge reduces downtime and makes installation and repair quick and easy. The 85M features the same great qualities as style 85 but with heavy duty capabilities. Stationary face options are carbon or silicon carbide. Elastomer options are the standard Viton, Aflas, or Fluraz. Construction is stainless steel.

• Sizes from 1.5” to 9”
• Pressures up to 450 PSIG
• Speeds up to 3600 RPM
• Temperatures up to 350° F

Single Cartridge Seals

Flexaseal single cartridge seals come in a variety of stationary and rotating configurations with various gland types such as, welded metal bellows, single spring, and multi-spring types. The single cartridge seals are a single piece, pre-assembled and preset by the manufacturer prior to installation. With the many different options, there is a Flexaseal Single Cartridge Seal available for your high temperature, corrosive, and heavy duty application. Elastomers include Viton®, Ethylene Propylene, Aflas®, Buna, Neoprene, and Perfluorelastomers. Faces come in Premium Grade Antimony Impregnated Carbon, Nickel Bound Tungsten Carbide, and Silicon Carbide.  Single Cartridge models come in the following variations; RB1, SMS1, SS1, SB1, RS1, 57, 63 & 66, PHB & PHS, 58, 53A, CFS & ECON, and RBX-AQ.

• Temperatures up to 800° F
• Pressures up to 1200 PSI
• Speeds up to 10,000 SFPM

Dual Cartridge Seals

Flexaseal offers the 73P/75P, 78/76, and 79 dual cartridge seals that have a pressurize barrier fluid or a non-pressurized buffer fluid to prevent process fluid from leaking into the environment. The dual cartridge seals come in both stationary multi-spring and rotating welded metal bellows configurations. All cartridge seal designs are hydraulically balanced and the shrouded face provides additional protection. The 79 model uses a heavy duty multi-spring tandem cartridge that keeps the product and barrier fluid on the outer diameter to increase safety and heat dissipation, while maximizing the flow of the barrier fluid.

• Temperatures up to 400° F
• Speeds up to 4500 SFPM
• Pressures up to 400 PSI

Welded Metal Bellows Seals

Flexaseal offers Style 40/42/45 and Style 60/61/62/64 welded metal bellows seals. These welded metal bellows seals are world-renowned for their engineering design. These seals can be used in many applications including cryogenic, standard, and high temperatures and vacuums. To meet the requirements of these applications, the welded metal bellows can be made with Inconel 718 treated AM350 and Hastelloy-C. All welded metal bellows seals are hydraulically balanced, eliminate seal hang up and shaft fretting, and are self-cleaning.

• Temperatures up to 800° F
• Pressures up to 300 PSI
• Speeds up to 10,000 SFPM

Multi-Lip Cartridge Seal

The MLC3 is the go-to option for processes with viscous substances such as syrups, tars, thick oils, resins, and glues. Unique machined lip geometry for a reliable sealing with less footprint that reduces parasitic torque and heat generation. The multi-seal includes single seal with anti-rotation and integrated back up ring and double lip seal with anti-rotation ring. MLC3 seal achieves optimum pumping rates at lower speeds with fewer sealing issues. Resistance to corrosion with a 316 stainless constructed drive collar and gland.

• Pressures up to 300 psi
• Temperatures between-100° to 450°F
• Speeds up to 3000 fpm Dry-running and 5000 fpm with environmental control

Dual Cartridge Mechanical Gas Lubricated Seal

GRF and GFL mechanical seals use nitrogen instead of a liquid lubricant which is a clean alternative. This design offers low maintenance and repair costs for the system as no barrier fluid to fill and the ability to retain 100% product purity along with extended seal life due to non-contacting seal faces eliminating friction and wear and reducing the amount of heat buildup. These dry running seals are great for batch run operations like tank unloading. A simple support system that utilizes API 682 Plan 74 and reduced power consumption provides operational efficiency.

• Sizes 1 3/8″, 1 3/4″, 1 7/8″, 2 1/8″, 2 1/2″, 2 5/8″ Standard and Big Bore Options
• Temperatures up to 390° F
• Speeds between 1450-3600 ROM
• Pressures up to 180 PSI

OEM Replacement Seals

Flexaseal provides replacement seals for a full array of compressors, mixers, pumps and other miscellaneous rotating equipment. Direct replacements for John Crane^©, Burgmann^©, Pac Seal, U.S. Seal^©, Flygt Seal^© & Davis Emu are just some examples of seals that are offered on a daily basis.  Offerings include all materials and anything from a Type 1 to a Type 8-1.

Heavy-Duty Flushless Slurry Seal

Built to withstand the harshest applications in slurry pumping, the Rock Killer Crusher Series (RKCS) Heavy-Duty Flushless Slurry Seal is ahead of its time. The RKCS seals are utilized in demanding industries, such as mining, mineral processing, flue gas desulfurization, and many others. Designed with ease of maintenance in focus, the RKCS seal is meant to operate with zero external flushing. The RKCS seal is abrasion and corrosion-resistant and has a stationary multi-spring design with springs isolated and far from pumped media. Also, the RKCS has a large open inner seal chamber that conveniently self-evacuates and doesn’t pack in and hold heat.

Seal Repair

Flexaseal’s repair facility is one-of-a kind. They have made a commitment to repair all mechanical seal styles regardless of manufacturer to like-new condition. If the seal is not repairable, they will quote a new Flexaseal as a replacement or offer a range of exchange programs to suit the customer’s needs. They have designed the Flexaseal repair facility to combine state-of-the-art engineering and manufacturing capabilities. Each seal component is decontaminated and evaluated in detail: faces, secondary seals and bellows testing, metallurgical examination, drive mechanism testing, digital load testing, and critical dimensions evaluation.

Other Seal Types

Along with standard mechanical seals, Flexaseal also offers custom engineered seals, slurry seals and mixer/agitator seals.  The Flexaseal Heavy Duty Slurry Seal (FHDS) stationary multi-spring single/double cartridge seal designs for the industry’s most challenging slurry applications.  The unique design offers increased seal reliability, flush less operation, lower operating costs and a two piece design when exotic metallurgies are required.  There are also seals for mixers and agitator that are offered for top entry, bottom entry and side entry mixers.  All mixer applications are unique and Flexaseal can custom design a seal to fit any application.

Seal Support Systems

Liquid lubricated dual mechanical seals require an external source of clean, cool lubricating fluid.  By using a dual seal with an seal support system, it will provide an enhanced sealing environment which promotes longer seal life.  Flexaseal offers the ANSI Lite barrier Fluid Reservoir, they have standard offerings for Plan 52, Plan 53 and Plan 54 flush designs.  They can also create a custom seal support system to meet the needs of any application.