Flexible Graphite Products

Flexible Graphite Tapes without Adhesive designed for moulding In Situ rings on the stuffing box, just by wrapping suitable width and length of tape on the stem or shaft to achieve sealing. With a tamping tool and gland follower torques end less rings can be formed on site. These are self lubricating and inert to serve as universal sealing tape on stuffing boxes. This tape is extremely handy, for emergencies when exact size packing is not available. Just four standard widths means reduction of inventory.

Specifications:

Standard die forming of Graphite Rings the life out of the ring - that's why we pre-form. We put compressibility and resilience into each ring and that's what makes the difference.When you receive a pre-formed ring from Smart-Shield, it still has 15% to 20% compressibility left in it.As you install the ring, it's only necessary to tighten the packing until a seal is effected, which leaves considerable life in the ring for future adjustments. The extra care we take makes the difference. It complements braided packing with inherent lubrication and heat dissipation to enhance operational life at affordable prices, making it a popular sealing device among OEMs and End Users.

Features:

• High percentage of pure graphite
• Precision made for interference seal fit
• Wide temperature range
• Metal reinforcement
• Broad sizes (up to 40” dia)

Specifications:

Working Temperature:

Smart- Shield’s Graphite Cloth are non-combustible when tested in accordance with BS 476, Part 4 are made from alumina-silica ceramic fiber, free of asbestos. These fiber materials can be used in different industrial applications under temperatures up to 1300°C and have excellent chemical stability and strong resistance to thermal shock and corrosion attack. Inconel wire / SS wire and fiberglass filament are incorporated into the yarn to increase tensile strength of the fabrics both before and after exposure to heat. Typical applications for tapes include gaskets, seals, furnace and welding curtains or pipe wrapping

Specifications:

Smart Shield Graphite Die Molded Ring are manufactured in a range of densities from 1.3 g /cc to 1.8 g /cc. Minimum carbon content 99% through to 99.85%. Corrosion and oxidation resistant grades and a PTFE impregnated grade also available.

Specifications :-

• Die Formed Rings - supplied in a density range of 1.3 g/cc to1.8 g/cc
• Available from 99% through to 99.85% purities – Corrosion inhibited, oxidation resistant and PTFE impregnated grades
• Square or rectangular section rings are supplied for most applications, however a wide range of non-standard shapes can be produced to suit specific requirements.

Features :-

• Supplied endless, split or as matched halves
• Metal tipped graphite moulded rings to customer drawings are available for high pressure / anti extrusion applications

Plain Flexible Graphite are produced from pure, expanded flexible graphite and do not contain any other fibers or filler materials. Because of their specific structure expanded graphite sheets are particularly suited for applications with extremely high or low temperatures, with highly corrosive and aggressive media, for sensitive flange materials (i.e. ceramic, glass, plastic) and for gas as well as steam applications.

Advantages:

• Universally applicable for gases & fluids
• Excellent thermal conductivity
• Chemically resistant against most media
• Can be stored indefinitely

Specifications:

Graphite Sheet are produced from pure, expanded flexible graphite and do not contain any other fibers or filler materials. Because of their specific structure expanded graphite sheets are particularly suited for applications with extremely high or low temperatures, with highly corrosive and aggressive media, for sensitive flange materials (i.e. ceramic, glass, plastic) and for gas as well as steam applications.


Advantages:

• Universally applicable for gases & fluids
• Excellent thermal conductivity
• Chemically resistant against most media
• Can be stored indefinitely

Graphite Sheet with Tanged Insert

Specifications:

Smart Shield’s Flexible expanded pure graphite pressure sealing / self sealing/ Bonnet Sealing rings  represent a major enhancement of the operational capabilities of graphite sealing rings used on valve stems . They are manufactured either plain or special SS wire mesh / foil along the cross section. They are available in square – rectangular – angular or any other cross sectional profile. The strong and dimensionally stable profile makes them suitable on gate, Globe and other types of valves. Excellent conformity to body /bonnet and requisite compressibility of Smart Shield SSR enables unmatched sealing; out classing asbestos or soft iron gaskets. Wide applicability in various media, temperature and pressure further add to the versatility of Smart Shield SSR; backed by sound technical know how, making it a popular choice over the competition

Advantages

• Greatly reduce the torque needed for efficient valve action

• Save on power consumption and enable smaller actuators to be used

• Lowers the break-out friction for smoother valve operation

• Retain exceptionally low friction characteristics for up to 20,000 valve cycles

• Subsequent manual adjustment extends performance to 60,000 cycles

•   Fire-safe capability enables rings to be used in plant subjected to fire rating tests

Sizes      :               As per Drawings,Dimensions and types of valves (OD Upto 800 mm)

Density :               1.8 gm/cc or more depending upon reinforcements

Thickness            :               upto 100 mm

PH Range             :               0 to 14

Pressure              :               500 bar

Working Temperature

In Oxidizing Atmosphere              :               - 240 to 450 °C

In Steam              :               - 240 to 650 °C

In Non Oxidizing Atmosphere    :               - 240 to 3000 °C

Availability

Flexible pure graphite self sealing ring without any reinforcement.

Flexible pure graphite self sealing ring with wire mesh / metal foil reinforcement along the cross section.

The above types with multi-layered metallic WIRE MESH or Stainless Steel CAPS on top and bottom.