Gasket, Bearing and O-Rings
SNT Plummer Blocks
Timken SNT Plummer Blocks feature durable cast-iron housing and robust sealing options to keep lubrication in and contamination out. Add in Timken® high-performance spherical roller bearings for a metric split block housed unit that delivers performance in the toughest environments.
Timken SNT Plummer Blocks are available in two- and four-bolt mounting configurations. The SNT line features 200, 300, 500 and 600 series housings; 3000 and 3100 series are available for larger sizes.
Shaft size range: 20 mm to 380 mm, cast steel and ductile iron housings available for severe duty applications.
Industries and Applications
Timken SNT Plummer Blocks handle demanding heavy industrial operations:
- Power Generation (Coal)
- Mining/Aggregate/Cement
- Metal MillsPulp & Paper/Sawmills/Forestry/Water Treatment
- Food Processing
- Warehousing
- Movable Bridges/Structures
- Industrial Fans/Blowers
SAF Pillow Blocks
Timken SAF pillow blocks combine rugged cast-iron or cast-steel housings with high capacity spherical roller bearings to meet the toughest demands of heavy industry. The convenient split-housing design simplifies assembly and service. Each pillow block contains an advanced-design spherical roller bearing with improved geometry and raceway finish for maximum load capacity and service life. Timken manufactures pillow blocks in two main styles: SAF and SDAF. The larger SDAF block is suggested for extreme heavy duty applications.
Size range: 1.37795 in. to 11.811 in., with special shaft sizes available up to 39.37 in. and beyond.
Design Attributes
- Split construction allows for easy assembly and disassembly.
- Pry tool slots and the exclusive Pry-Lug fulcrum simplifies bearing inspection, service and replacement.
- Caps are removed quickly and easily, preventing damange to the bearing or housing.
- Integrated housing and bearing design enhances unit lubrication characteristics.
- Multiple sealing options protect against contamination.
Applications
- Conveyors
- Mining applications
- Pulp and paper mills
- Rolling mills
The Change™ Gasket is available is a wide range of filler and facing materials, including Flexicarb SEL Graphite, PTFE, Thermiculite and Corriculite.
The high level of stored energy gives the Change gasket extremely high recovery. In a compression test against other gaskets, the Change Gasket recovered almost five-times better than a Kammprofile or DJ gasket.
Available in Styles CG (winding with outer ring), CGI (Winding with inner and outer rings), RIR (winding with inner ring), R (winding only). Also available with pass bar configurations for heat exchanger applications. (Note, DJ (Double Jacketed) pass bar configuration is used).
Standard winding heights are .125″ and .177″. See Flexitallic Engineering for appropriate winding wire height.
Change™ – Graphite Filler
Metal-wound gasket designed to deliver a seal with the most dynamic recovery, with Graphite filler.
| Approval | API 6FB, TA Luft |
| Brand | Change |
| Flange Face | Raised & Flat Face, Flat Face (CG & CGI), Male x Female (R & RIR), Tongue and Groove (R & RIR) |
| Media | Hazardous |
| Maximum Temperature |
450°C / 842°F Hazardous |
| Minimum Temperature | -240°C / -400°F |
| Pressure | 431 Bars / 6251.14 PSI |
| Pressure Class | 150, 300, 600, 1500, 2500, 400, 900 |
| Pressure Rating PN | PN10, PN16, PN25, PN40, PN64, PN100, PN160, PN250 |
The Change™ Gasket is available is a wide range of filler and facing materials, including Flexicarb SEL Graphite, PTFE, Thermiculite and Corriculite.
The high level of stored energy gives the Change gasket extremely high recovery. In a compression test against other gaskets, the Change Gasket recovered almost five-times better than a Kammprofile or DJ gasket.
Available in Styles CG (winding with outer ring), CGI (Winding with inner and outer rings), RIR (winding with inner ring), R (winding only). Also available with pass bar configurations for heat exchanger applications. (Note, DJ (Double Jacketed) pass bar configuration is used).
Standard winding heights are .125″ and .177″. See Flexitallic Engineering for appropriate winding wire height.
Change™ – Corriculite® Filler
Metal-wound gasket designed to deliver a seal with the most dynamic recovery, in corrosion sensitive applications.
| Approval | API 6FB |
| Brand | Change |
| Flange Face | Raised & Flat Face, Flat Face (CG & CGI), Male x Female (R & RIR), Tongue and Groove (R & RIR) |
| Media | Hazardous |
| Maximum Temperature |
260°C / 500°F |
| Minimum Temperature | -196°C / -321°F |
| Pressure | 431 Bars / 6251.14 PSI |
| Pressure Class | 150, 300, 600, 1500, 2500, 400, 900 |
| Pressure Rating PN | PN10, PN16, PN25, PN40, PN64, PN100, PN160, PN250 |
| Brand | Change HF |
| Media | Hazardous |
| Flange Face | Raised & Flat Face |
| Maximum Temperature | 260°C / 500°F |
| Minimum Temperature | -240°C / -400°F |
| Pressure | 103 Bars / 1493.89 PSI |
| Pressure Class | 150, 150 & 300, 300, 600 |
| Pressure Rating | PN10, PN16, PN25, PN40, PN64, PN100 |
| Approvals |
Pending |
Change™ – HF
The Change™-HF is suitable for use in HF-Alky service.
Click to expand cross section
The Change™-HF protects and outperforms every other HF-Alky gasket on the market.
-Flexibility of a proven spiral wound, low seating stress of a kammprofile.
-Graphite filled like a spiral wound, graphite faced like a kammprofile
-Sigma PTFE inner ring barrier protects the flange from acid corrosion and also fills any existing corrosion damage
-Unique wire profile stores more elastic energy to create better dynamic performance and superior load retention in cyclic applications
-Excellent recovery (tested with 34% recovery @ 18K PSI [124 MPa], 30% compression)
-No spring washers needed, no re-torque required
-Cycle over & over, and maintain sealability
The Change™ Gasket is available is a wide range of filler and facing materials, including Flexicarb SEL Graphite, PTFE, Thermiculite and Corriculite.
The high level of stored energy gives the Change gasket extremely high recovery. In a compression test against other gaskets, the Change Gasket recovered almost five-times better than a Kammprofile or DJ gasket. Available in Styles CG (winding with outer ring), CGI (Winding with inner and outer rings), RIR (winding with inner ring), R (winding only). Also available with pass bar configurations for heat exchanger applications. (Note, DJ (Double Jacketed) pass bar configuration is used). Standard winding heights are .125″ and .177″. See Flexitallic Engineering for appropriate winding wire height.
Change™ – PTFE Filler
Metal-wound gasket designed to deliver a seal with the most dynamic recovery, with PTFE filler material.
| Approval | API 6FB, TA Luft |
| Brand | Change |
| Flange Face | Raised & Flat Face, Flat Face (CG & CGI), Male x Female (R & RIR), Tongue and Groove (R & RIR) |
| Maximum Temperature | 260°C / 500°F |
| Minimum Temperature | -240°C / -400°F |
| Pressure | 431 Bars / 6251.14 PSI |
| Pressure Class | 150, 300, 600, 1500, 2500, 400, 900 |
| Pressure Rating | PN10, PN16, PN25, PN40, PN64, PN100, PN160, PN250 |
The Change™ Gasket is available is a wide range of filler and facing materials, including Flexicarb SEL Graphite, PTFE, Thermiculite and Corriculite.
The high level of stored energy gives the Change™ gasket extremely high recovery. In a compression test against other gaskets, the Change™ Gasket recovered almost five-times better than a Kammprofile or DJ gasket. Available in Styles CG (winding with outer ring), CGI (Winding with inner and outer rings), RIR (winding with inner ring), R (winding only). Also available with pass bar configurations for heat exchanger applications. (Note, DJ (Double Jacketed) pass bar configuation is used). Standard winding heights are .125″ and .177″. See Flexitallic Engineerring for appropriate winding wire height
Change™ – 855 Filler
Metal-wound gasket designed to deliver a seal with the most dynamic recovery, with Thermiculite 855 filler
| Approval |
|
|
| Brand | Change | |
| Flange Face | Raised & Flat Face, Flat Face (CG & CGI), Male x Female (R & RIR), Tongue and Groove (R & RIR) | |
| Media | Hazardous | |
| Maximum Temperature |
982°C / 1799.6°F | |
| Minimum Temperature | -240°C / -400°F | |
| Pressure | 431 Bars / 6251.14 PSI | |
| Pressure Class | 150, 300, 600, 1500, 2500, 400, 900 | |
| Pressure Rating PN | PN10, PN16, PN25, PN40, PN64, PN100, PN160, PN250 |
Thermiculite® 835 is a critical service gasket designed for use in applications involving high temperatures and/or aggressive chemical media. It is comprised of a spirally wound sealing element composed of a metal winding wire in combination with a vermiculite based filler material.
The gasket can be supplied with inner and/or outer centering/compression stop rings or in sealing element form. The spiral construction provides excellent sealing performance and confers high levels of gasket resilience.
Thermiculite® 835 SWG Filler Material
Thermiculite® 835 is a high temperature filler material for Spiral Wound Gaskets.
| Approval | API 6FB, TA Luft |
| Brand | Thermiculite® |
| Flange Face | Flat to Groove, Male x Female, Raised & Flat Face, Tongue and Groove |
| Maximum Temperature | 1000°C / 1832°F |
| Minimum Temperature | |
| Pressure | 431 Bars / 6251.14 PSI |
| Pressure Class | 150, 300, 600, 1500, 2500, 400, 900 |
| Pressure Rating | PN10, PN16, PN25, PN40, PN64, PN100, PN160, PN250 |
O-Rings & Elastomeric Seals (Simrit/DuPont)
O-rings are circular cross-section seals used in hydraulic and pneumatic systems.
| Material | Type/Brand | Primary Use |
| NBR (Buna-N) | 2-XXX Series | General oil, fuel, and grease service. Not for high heat. |
| FKM (Viton™) | 3-XXX Series | High temperature and chemical resistance. Standard in engines. |
| EPDM | 4-XXX Series | Excellent for water, steam, and outdoor weathering. Fails in oil. |
| FFKM (Kalrez®) | Extreme High-End | The “Gold Standard.” Chemically inert to almost everything. Extremely expensive. |
| Aflas® | Sour Gas | Specialized for oilfields containing $H_{2}S$ (Hydrogen Sulfide) and steam. |
| PTFE Encapsulated | Simrit Series | A silicone or FKM core covered in a PTFE jacket for maximum chemical resistance with elastomeric “spring-back.” |
- • CGI Spiral Wound Gasket – ½” to 60” (Class 150–2500)
- • RIR Spiral Wound Gasket – ½” to 24”
- • Style CG Spiral Wound – ½” to 60”
- • Thermiculite SWG – High-temperature service
- • Change™ Gasket – Heat exchanger service
- • R-Type RTJ (Oval) – API 6A sizes
- • R-Type RTJ (Octagonal) – High pressure
- • RX RTJ Gasket – 2000–5000 psi
- • BX RTJ Gasket – up to 20,000 psi
- • IX Seal Ring – critical service
- • GYLON 3500 – PTFE gasket (chemical service)
- • BLUE-GARD 3000 – compressed fiber
- • GRAPH-LOCK – graphite sheet gasket
- • Style 9850 – high temp
- • THERMa-PUR – heat exchanger gasket
- • 30205 Tapered Roller Bearing
- • 6210 Deep Groove Ball Bearing
- • NU220 Cylindrical Roller Bearing
- • 22218 Spherical Roller Bearing
- • 32010 Tapered Roller Bearing
- • RBC SJ Series Journal Bearing
- • RBC Heim Rod End Bearings
- • RBC Thin Section Bearings
- • RBC Cam Follower Bearings
- • RBC Airframe Bearings (heavy-duty industrial use)
- • Dodge ISAF Pillow Block Bearing
- • Dodge Type E-XTRA Bearing
- • Dodge S-2000 Bearing Unit
- • Dodge Sleeve Bearing
- • Dodge Split Roller Bearing
- • 2-XXX Series O-Ring (NBR) – general oil service
- • 3-XXX Series O-Ring (FKM / Viton) – high temp
- • 4-XXX Series O-Ring (EPDM) – water/steam
- • Kalrez® O-Ring (FFKM) – extreme service
- • Aflas® O-Ring – sour gas (H₂S)
- • Simrit O-Ring NBR Series • Simrit FKM O-Ring Series • Simrit EPDM O-Ring
- • Simrit PTFE Encapsulated O-Ring
- • Simrit FFKM O-Ring (high-end)