Flex-A-Seal Mechanical Seals:      Single Cartridge Seals

Style RC - This is our most cost effective cartridge design, but the list of features is equal to that of a mid-range seal. The RC is hydraulically balanced and has a monolithic face with homogenous material.

• A unique shrouded rotary virtually eliminates any seal clogging in the stuffing box.
• Drive mechanisms, springs, and the sleeve are isolated from the product, minimizing corrosion and stress-related failure. The seal faces are positioned in the gland for maximum protection.
• A dynamic elastomer moves on a non-metallic surface and eliminates fretting.
• The flush position maximizes face cooling.
• It fits all standard ANSI pumps and offers easy cartridge installation.
• Operating Conditions - Max. Temp 400ºF (204ºC), Max. Pressure 300 PSI (20 bar), Max. Speed 4500 FPM (22 m/sec).

Style SMS - Flex-A-Seal's most cost effective cartridge design, with stationary single spring cartridges.

• Monolithic face w/ homogenous material.
• Drive mechanisms out of product.
• Springs are out of product, minimizing corrosion and stress related failure.
• Unique shrouded rotary for maximum face protection and reliable startup.
• Uniform 360 degree transfer of torque to rotating face.
• Seal faces positioned in gland for maximum protection.
• Dynamic elastomer moves on nonmetallic surface eliminating fretting.
• Faces designed for optimum heat dissipation.
• Sleeve is isolated from product.
• Hydraulically balanced.
• Easy cartridge installation.
• Flush position maximizes face cooling.
• Fits all standard and large bore ANSI pumps.
• Also available: SMS-3 C, V, & D - Providing all the benefits of the SMS-1 design, plus vent and drain gland with throttle bushing. Pipe connections are made to different sizes to assure that correct piping plans are employed.
• Operating Conditions - Max. Temp 400ºF (204ºC), Max. Pressure 300 PSI (20 bar), Max. Speed 6000 FPM (30 m/sec).

Style RB - An integrated cartridge system design consisting of a single welded metal bellows cartridge.

• Rotating welded metal bellows - self cleaning.
• Simple installation requires no dimensions to be taken. Slide on, bolt to box face, tighten set screws, remove spacers.
• No moving elastomers. No fretting. No hang-up.
• Minimal number of parts. Simple design means less pieces to cause problems.
• Fits all ANSI pump designs.
• Metric and DIN sizes readily available.
• Fits 5/16" cross section stuffing boxes.
• Easily modified to fit oversized stuffing boxes.
• Quick, inexpensive repairs.
• Also available: RB-3 C, V, & D - Providing all the benefits of the RB-1 design, plus vent and drain gland with throttle bushing. Pipe connections are made to different sizes to assure that correct piping plans are employed.
• Operating Conditions - Max. Temp 400ºF (204ºC), Max. Pressure 300 PSI (20 bar), Max. Speed 4500 FPM (22 m/sec).

Style SS1 - Stationary pusher design, with stationary single spring cartridges.

• Hydraulically balanced, heavy-duty, and rugged design.
• No little springs to clog or fatigue, simply one beefy single spring located out of the product.
• Easy cartridge installation.
• Flush position maximizes face cooling.
• Shrouded rotary seal ring for maximum face protection and reliable start-up.
• Uniform 360° transfer of torque to primary rotating face.
• No pins to break or hang up.
• Fits all standard ANSI pumps.
• Easily upgradeable faces, metallurgies, and elastomers.
• Faces designed for optimum heat dissipation.
• Also Available: SS-3 C, V, & D - Providing all the benefits of the SS-1 design, plus vent and drain gland with throttle bushing. Pipe connections are made to different sizes to assure that correct piping plans are employed.
• Operating Conditions - Max. Temp 400ºF (204ºC), Max. Pressure 300 PSI (20 bar), Max. Speed 6000 FPM (30 m/sec).

PHB / Style 33 - Stationary welded bellows, engineered for the most demanding corrosive applications.

• The only cartridge seal in industry with only one o-ring, cost savings are substantial when perfluoroelastomers are required.
• Faces positioned near the lantern ring connection for enhanced cooling and flushing.
• 316 SS sleeve and gland are out of the product and don’t need to be constructed of expensive metals in corrosive situations.
• Rotary seal ring is shrouded for protection.
• Minimizes nearest obstruction problems.
• Hydraulically balanced design.
• No dynamic O-rings.
• Easy cartridge installation.
• Even face loading.
• Operating Conditions: Max. Temp 400ºF (204ºC), Max. Pressure 300 PSI (20 bar), Max. Speed 6000 FPM (22 m/sec).

PHB / Style 35 - Stationary multiple spring cartrdige, engineered for the most demanding corrosive applications.

• Stationary multiple spring design.
• 316 SS sleeve and gland are out of product and do not need to be constructed of expensive metals in corrosive situations.
• Seal faces positioned near lantern ring connection for enhanced cooling and flushing.
• Rotary seal ring is shrouded for protection.
• Minimizes nearest obstruction problems.
• Heavy duty anti-rotation lugs.
• Hydraulically balanced design.
• Only 2 O-rings.
• Easy cartridge installation.
• Springs are out of the product.
• Operating Conditions: Max. Temp 400ºF (204ºC), Max. Pressure 300 PSI (20 bar), Max. Speed 6000 FPM (22 m/sec).

Style SB - Stationary welded bellows cartridge.

• Easy cartridge installation.
• Stationary bellows design, maximizing face alignment.
• Hydraulically balanced design.
• Even face loading.
• No dynamic elastomers.
• Only 2 static O-rings.
• Flush position maximizes face cooling.
• Shrouded rotary seal ring for maximum face protection and reliable start-up.
• Uniform 360° transfer of torque to the primary rotating face.
• No pins to break or hang up.
• Fits all standard ANSI pumps.
• Faces, metallurgies, and elastomers are easily upgradeable.
• Faces designed for optimum heat dissipation.
• Also available: SB-3 C,V, & D - All the benefits of the SB-1 design plus vent and drain gland with throttle bushing. Pipe connections are made to different sizes to assure that correct piping plans are employed.
• Operating Conditions: Max. Temp 400ºF (204ºC), Max. Pressure 300 PSI (20 bar), Max. Speed 6000 FPM (30 m/sec).

Style 30 - Low cost single cartridge, single spring, elastomer bellows design.

• Heavy duty / non clogging.
• Minimal number of parts.
• Simple installation.
• No moving elastomers.
• Fits all ANSI pumps.
• Fits 5/16” cross section stuffing box.
• Easily modified to fit oversized stuffing boxes.
• Operating Conditions: Max. Temp 400ºF (204ºC), Max. Pressure 150 PSI (10 bar), Max. Speed 4500 FPM (22 m/sec).

Style 57 - Low cost single cartridge, single spring.

• Heavy duty / non clogging.
• Minimal number of parts.
• Simple installation.
• Fits all ANSI pumps.
• Fits 5/16” cross section stuffing box.
• Easily modified to fit oversized stuffing boxes.
• Operating Conditions: Max. Temp 400ºF (204ºC), Max. Pressure 150 PSI (10 bar), Max. Speed 4500 FPM (22 m/sec).

Style 66 - High temperature cartridge.

• Easy cartridge installation.
• High temperature static grafoil packing throughout.
• Individual connection sizes to assure proper piping.
• Inconel bellows options available.
• Rotating designs assure self cleaning.
• Stationary and drive lug designs available as required.
• Easily upgradeable to API design specifications.
• Operating Conditions: Max. Temp 800ºF (425ºC), Max. Pressure 300 PSI (20 bar), Max. Speed 4500 FPM (22 m/sec).