Spilt seals | Heavy-duty Cartridge Seal for Boiler Feed Circuit Applications
Features mechanical seal Type 3740D
- California Residents: PROPOSITION 65 WARNING
- Suitable for use in equipment according to 94/9/EC (ATEX 95) Group II, Category 2 GD
- Factory-preassembled rotor assembly for fast, easy yet precise rotating face installation
- Separate stationary seal face for visual assurance the halves are correctly aligned
- Factory-preassembled gland plate assembly for easy, single-step installation
- Enhanced runout capability for large radial shaft movements
- Premium seal face materials for optimal performance
- Temporary wet-running allowable
- Captive socket head cap screws to eliminate lost or dropped screws
- Same-side screws on all hardware for easy access and faster installation
- Dovetail O-ring grooves to contain all O-rings without requiring adhesives
- Fast and easy field repair kits that do not require any special tools, adhesives or procedures
Recommended Applications Type 3740D
- Mixer and agitators
- Driven machinery
- Other rotating equipment
About Mechanical seal Type 3740D
The Type 3740D dry-running split seal is a mechanical seal designed for the large shaft run-out and harsh operating conditions commonly associated with top-entry vessel mixing services and other dry-running applications. Type 3740D dry-running split seals are suitable for use in equipment according to 94/9/EC (ATEX 95) Group II, Category 2 GD.
The Type 3740D is part of the 3740 Series of split seals, which includes the Type 3740 wet-running split seal. These split seals use the latest modular split seal technology from John Crane that combines the unique design requirements for wet-running and dry-running services onto one common seal platform.
Design Features mechanical seal Type 3740D
- Factory-preassembled rotor assembly for fast, easy, yet
precise rotating face installation - Separate stationary seal face for visual assurance the halves
are correctly aligned - Factory-preassembled gland plate assembly for easy, single-step installation
- Premium seal face materials for optimal performance
- Captive socket head cap screws to eliminate lost or dropped
screws - Same-side screws on all hardware for easy access and
faster installation - Dovetail O-ring grooves to contain all O-rings without
requiring adhesives - Fast and easy field repair kits that do not require any
special tools, adhesives or procedures - Enhanced runout capability for large radial shaft movements
- Temporary wet-running allowed
Material mechanical seal Type 3740D
- Primary Ring Carbon
- Mating Ring Ceramic
- Gland Plate Assembly
Mating Ring Adapter Assembly
Spring Adapter Assembly Set
316 Stainless Steel Alloy 20 Monel ®
Titanium Inconel ® 625 - Retaining Ring Alloy X-750
- Springs Alloy C-276
- Elastomers Ethylene Propylene
Fluoroelastomer
Operating range mechanical seal Type 3740D
- Temperature Limits
275°F/135°C - Pressure Limits
Vacuum to 80 psi(g) / 5.5 bar(g)
- Speed Limits
400fpm/2m/s
Product Description Type 3740D
The Type 3740 is a family of split seals using the latest modular split seal technology from John Crane that also combines the unique design requirements for wet-running and dry-running services onto one common seal platform.
- The Type 3740D dry-running split seal is designed for the
large shaft run-out and harsh operating conditions commonly associated with top-entry vessel mixing services and other dry-running applications. - The Type 3740 wet-running split seal incorporates the best
features for fast and easy seal installation, while providing
reliable seal performance in demanding pump and other
rotating equipment fluid services