Mak-Tech Seals

Jogeshwari West, Mumbai, Maharashtra

• Dual seal
• For plain shafts
• Independent of direction of rotation Rotating multiple springs
• Seal concept based on the S70 range Unbalanced
• Variant with pumping screw available (S74F-D)

Technical Features

• Flexibility in torque transmissions
• 1 Pumping screw for media with higher
• viscosity also possible Self cleaning effect
• Short installation length also possible Suitable for media with low solids contents
• Versatile application possibilities
• EN 12756 (For connection dimensions d1 upto 100 mm )

Typical Industrial Applications

• Adhesives Chemical industry
• Low solids content and low abrasive media
• Media with poor lubrication properties Process industry
• Toxic and hazardous media Chemical standard pumps

• Cartridge unit
• For top entry drives, type S184 to
• DIN Independent of direction of rotation Liquid-lubricated
• Multiple springs rotating Single or double seals Unbalanced

Technical Features

• Available with or without floating bearing
• Double seals can be applied at higher pressure
• Ready-to-fit and factory-tested units Suitable for standardizations

Typical Industrial Applications

• Agitators Chemical industry
• Non-toxic media with single seal Pharmaceutical industry Reactors
• Toxic media with double seal

Performance Capabilities

• DIN 28138 T2
• Sizes -  d3 = Upto 220 mm (Upto
• 8.625’’)
• Single seals -
• Pressure -  p1 = vacuum . 6 bar (87 PSI),
• p3 = pressureless
• Temperature -  t1* = -40 °C . +150
• (250) °C
• (-40 °F . +302 (482) °F)
• Double seals -
• Pressure -  p1 = vacuum . 16 bar (232 PSI),
• p3 = max. 18 bar (261 PSI)
• Temperature -  t1* = -40 °C . +200
• (350) °C
• (-40 °F . +392 (662) °F)
• Speed = 0 . 5 m/s (0 . 16 ft/s)

Standards

• FDA
• DIN 28136 T2 (for steel vessels)
• DIN 28141 (flange connection for steel vessels)
• DIN 28154 (shaft end for steel vessels)

• Balanced Dry-running
• For top entry drives, on request side drive possible
• Independent of direction of rotation Multiple springs rotating
• Outboard
• Single and double seals

Technical Features

• Available as components or as
• cartridge unitsConnections for steel (MSS184)
• Glass-lined (MSS164) reactors area
• available to DIN 28138 standards or
• as required
• Suitable for pressure reversals

Typical Industrial Applications

• Chemical industry
• Food and beverage industry Non-toxic media with single seal Pharmaceutical industry
• Toxic media with double seal Agitators
• Reactors

Standards

• FDA ATEX
• DIN 28136 T2 (for steel vessels)
• DIN 28141 (flange connection for steel vessels)
• DIN 28154 (shaft end for steel vessels) DIN 28136 T3 (for glass-lined vessels) DIN 28137 T2 (flange connection for glasslined vessels)
• DIN 28159 (shaft end for glass-lined vessels)

Materials

• Seal face -  Carbon graphite, FDA
• conform
• Seat -  Silicon carbide
• Secondary seals and metal parts according to application and customer's specifications

• Balanced
• Dual seals in tandem as well as back-to- back arrangements also available Independent of direction of rotation Single seal
• Stationary springs

Technical Features

• Adjusts to shaft movements because of the stationary design
• Balanced seal even with plain shafts No damage of the shaft by a dynamically loaded O-Ring
• Operation in vacuum without additional seat locking possible
• Safe operation
• Small installation sizes
• Spring unit isolated from the product so no sticking and clogging of the springs
• Suitable for pressure reversals Suitable for solid containing and abrasive media

Typical Industrial Applications

• Chemical industry
• Dirty, abrasive and solid containing media Fugitive hydrocarbons
• Refining technology Sticky and stringy media
• Water and waste water technology Chemical standard pumps Sewage pumps

Materials

• Seal face -  Carbon graphite resin impregnated (B), Silicon carbide (Q1) Seat -  Silicon carbide (Q1)
• Secondary seals -  FKM (V), NBR (P), FFKM
• (K) , PTFE (T)
• Springs -  Hastelloy® C-4 (M) Metal parts -  CrNiMo steel (G)

Performance Capabilities

• Sizes -  d = Upto 100 mm (Upto 4.000’’) Pressure -  p1*) = 25 bar (363 PSI) Temperature -  t = -40 °C . +220 °C (-40
• °F . 428 °F)
• Speed = 20 m/s (66 ft/s)
• Permissible axial movement -  ± 1.0 mm

• Cartridge unit
• Double seal, single seal on request For glass-lined vessels, acc. to DIN 28138 T2
• For top entry drives
• ndependent of direction of rotation Multiple springs rotating Unbalanced
• Available with or without floating

Technical Features

• bearing
• Double seals can be applied at higher pressure and rotating speed
• Ready-to-fit and factory-tested unit Suitable for standardizations

Typical Industrial Applications

• Chemical industry
• Non-toxic media with single seal Pharmaceutical industry
• Toxic media with double seal Agitators
• Reactors

Materials : According to application and customer's specification.

Performance Capabilities

• Sizes: d3 = Upto 160 mm (Upto 6.500’’)
• Pressure: p1 = vacuum . 16 bar (232 PSI),
• p3 = max. 18 bar (261 PSI) Temperature: t1 = -40 °C . +200 (250) °C (-40 °F . +392 (482) °F)
• Speed = 0 . 5 m/s (0 . 16 ft/s)

The MAK-TECH SEALS Thermosiphon systems of the SBF6000 range meet all the requirements to supply mechanical seals in accordance with the API 682 guidelines. The vessels are equipped with all essential connections for fitting additional components. The range is available in two standard vessel sizes (shown: SBF6000) with dished heads; a version which can be dismantled is also available as an option. The modular system allows the SBF6000 vessels to be combined with a wide range of system components such as, level switch/transmitter, pressureswitch/transmitter, base frame, etc. Circulation in accordance with API 682 / ISO 21049: Plan 52, Plan 53A

Functional DescriptionThe SBFS system performs all the basic functions of a buffer/barrier system for the operation of double seals :

• To pressurize the buffer chamber
• Leakage compensation
• Buffer/barrier fluid is circulated by thermosiphon effect
• Or forced circulation system
• To cool the seal
• To selectively absorb product leakage and prevent dry
• Running (tandem arrangement) Use compressed air or nitrogen for pressurization; pressurization is monitored by a pressure switch.
• The incorporated level switch issues a signal whenever the level of buffer/barrier fluid is too low.

Typical Industrial Applications

• Refining technology
• Oil and gas industry
• Chemical industry
• Petrochemical industry

Technical Features

• A version which can be dismantled is also available as an option: for optimum and simple cleaning of the vessel interior
• Modular system: combination with a wide range of system components possible
• Operating limits up to 50 bar / 200°C: suitable for a wide range of demanding operating conditions
• Robust design with weld-pad type sight-glass for optimum visual level monitoring.

Sleeve mounted rubber bellow seals of compact unitised design. Suitable for small shaft diameter, general low pressure applications

Characteristics

• Unbalanced Mechanical Seal.
• Dependent on direction of rotation.

Operating Limits

• p: 6 Bar ; V: 10 m/s
• T: -15 / +80ºC
• La temperatura viene condicionada por la selección de materiales.
• Los límites operatives están condicionados por el factor PV.

Common ‘O’-Ring mounted designs without anti-rotation provision, to suit common European housing sizes including DIN. These are industry standard seats, commonly specified for Conical Spring Seals on general duties. However, consideration should be given to using long-style seats, with anti-rotation provision, should the conditions necessitate.

Enclosed rubber bellow seal, with short axial fitting length, ideal for equipment where space is restricted.

Characteristics

• Unbalanced Mechanical Seal.
• Dependent on direction of rotation.

Operating Limits

• p: <6 Bar ; V: <10 m/s
• T: -20 / +120ºC
• Temperature is based by material selection.
• Operating limits are based on PV factor.

• “O”- Ring mounted, monolithic “H” - configuration seats, to suitCommon European housings (M21) or common American (M31) housing dimension
• These seats provide the benefits of both a short fitting length with a rear face pinhole and thus of being able to be pinned throughout the size range. This provides an optional anti-rotation feature within a seat of short operational length.

• Common ‘O’-Ring mounted stationaries to suit DIN housing sizes, designed to provide a wide range of compatability with Mak–Tech rotary seal types.
• M9 has an anti-rotation pin provision and is recommended particularly for larger shaft sizes and / or more viscous media. M6 is a standard short DIN seat with no pin slot.

• Common Mak-Tech boot-mounted stationary designs to fit and suit a variety of international housing and working length standards.Boot-mounted seats offer optimum cost and performance benefits.
• The ribbed profile and increased elastomer contact area withthe housing is often preferred.
• Please specify the actual shaft size code required when ordering, as a seat separate to the seal, as each size has a unique I.D.

• Monolithic stationary ring with an ‘O’-Ring installed in a radial groove outside of the stationary ring.
• This method of installation allows direct contact between the back of the stationary ring and the pump housingThis design of stationary promotes efficient heat transfer, from theSeal faces and the seat ring, to the pump body.
• Making this seatDesign ideal for higher temperatures media duties.

• Common ‘O’-Ring mounted stationaries to suit DIN housing sizes, designed to provide a wide range of compatability with Mak-Tech rotary types.
• M1DIN has anti-rotation provision and is recommended particularly for larger shaft sizes and / or more viscous media. M1DINS is a Standard short DIN seat with no pin slot

• ‘L’-Shaped P.T.F.E. boot-mounted stationary, to suit common housing sizes. Due to the low-friction nature of P.T.F.E., this stationary seat has necessarily been designed with an anti-rotation provision, and it is recommended to ensure this is utilized.
• Widely utilized in chemical process equipment, due to theExceptional chemical resistance that can be provided.

• FT stationary is an industry standard design with a “T”-shaped profile. Supplied complete with two P.T.F.E. flat gaskets, for
• Clamping as illustrated.
• FT is designed for medias that are aggressive towards elastomersand is widely utilized with MTS MS09/MS45/MS59 seriesMulti-spring rotaries.

Sleeve mounted, rubber bellow seals of compact unitised design. Suitable for small shaft diameter, general low pressureapplications.

Characteristics

• Unbalanced Mechanical Seal.
• Dependent on direction of rotation.

Operating Limits

• p: <6 Bar ; V: <10 m/s
• T: -15 / +120ºC
• Temperature is based by material selection.
• Operating limits are based on PV factor.