Features mechanical seal type 2874ne
- California Residents: PROPOSITION 65 WARNING
- API 682/ISO 21049 qualified.
- Centrifugal advantage: process fluid at the OD of the bellows.
- Pressure-balanced design withstands full reverse pressurization.
- Static secondary seals have high-temperature capability and eliminate the cost of expensive perfluoro elastomers.
- Edge-welded metal bellows.
- Dual mating ring arrangement meets API 682 design requirements.
- Spiral groove technology for superior operating performance.
- Eliminates problems with coking barrier fluids and fouled heat exchangers.
Recommended Applications type 2874ne
- Process pumps
- Other rotating equipment
About Mechanical seal type 2874ne
A new, highly reliable gas-lubricated API 682 (ISO 21049) qualified high-temperature, non-contacting mechanical seal that utilizes internally pressurized outward pumping spiral groove face technology with high-temperature seal features such as Inconel-welded metal bellows and non-elastomeric flexible carbon graphite secondary seals. This innovative design technology is ideally suited for reliably sealing high-temperature process fluids on rotating equipment up to 800°F/425°C and fluids requiring inert secondary seals. Innovative alternative to conventional wet contacting seals that permits reliable operation in high-temperature services. Fugitive emissions for Maximum Achievable Control Technology (MACT) compliance for sealing higher-temperature, volatile or hazardous fluids. API 682/ISO 21049 qualified. Elastomer-free seal handles a wide range of applications. Eliminates problems associated with coking barrier fluids and fouled heat exchangers.
Design Features mechanical seal type 2874ne
- Centrifiugal advantage: process fluid at the OD of the bellows
- Pressure balanced design withstands full reverse pressurization
- Static secondary seals have high-temperature capability and eliminate the cost of expensive perfluoroelastomers
- Edge-welded metal bellows
- Dual mating ring arrangement meets API 682 design requirements
- Spiral groove technology for superior operating performance
Material mechanical seal type 2874ne
- Primary Ring: Sealide-C™
- Mating Ring: Silicon Carbide
- Bellows: Alloy 718 (UNS N07718)
- Primary Ring: Adapter Alloy 625 (UNS N06625)
- Adapter: Alloy 625
- Canted Spring: Alloy C-276 (UNS N10276)
- Static Seals: Flexible Graphite
- Sleeve: 316L SS (UNS S31603)
- Gland: 316 SS (UNS 31600)
- Compression Ring: 316 Stainless Steel
- Drive: Collar 316L SS
- Set Screw: 316 SS
- Packing Follower: 316 SS
- Outer Set Screw: Hardened Alloy Steel
- Hex Head Cap Screw: 316 SS
- Gland Gasket: Spiral Wound Metal Gasket
- Snap Ring: 302 SS
- Bushing: (optional) Carbon
- Spacer: 302 SS
- Socket Head Cap: Screw 316 SS
Operating range mechanical seal type 2874ne
| Temperature Limits | -100°F to 800°F/-75°C to 425°C
|
|---|---|
| Pressure Limits | Vacuum to 230 psi(g)/16 bar(g)
(See Basic Pressure Ratings curve on Product Specification sheet.)
|
| Speed Limits | 1450 to 3600 rpm
For speeds outside this range, contact John Crane Engineering. |
Product Description type 2874ne
Non-contacting, internally pressurized outward pumping dual welded metal bellows cartridge seal that permits reliable operation in high-temperature services
- 0.0 Fugitive Emissions for Maximum Achievable Control Technology (MACT) compliance for sealing higher temperature, volatile, or hazardous fluids
- For use in API 610 pump and larger bore seal chambers.
- API 682/ISO 21049 qualified
- Elastomer-free seal handles a wide range of applications
- Eliminates problems associated with coking barrier fluids and fouled heat exchangers
