Sigma 81 Zero Leakage Packing, Self Lubricant PTFE Fibre Gland Packing
ITEM : Sigma 81

PRODUCT NAME : Sigma 81 Zero Leakage Packing, Self Lubricant PTFE Fibre Gland Packing



APPLICATIONS / USES : Gland packing made of PTFE fibre yarn pre-impregnated with PTFE, and re-impregnated during square braiding. It has excellent properties of sealing, lubricating and resistance to chemicals.
A universal use all chemical packing made from pure PTFE fibres having Duplex Braid construction
to increase dimensional stability treated with inert high temperature resisting lubricant to resist migration
and to display compressibility and recovery characteristics.

Sigma 81 packing is safe, more flexible, and non-toxic. Fluids can be sealed with a minimum of gland pressure, there is less friction as well as heat build up. It is an inert, virtually indestructible packing, having a lower co-efficient of friction with good compressive strength.

Service & Application : A good packing to seal against concentrated Acids, Alkali solutions, Agressive
organic / inorganic Chemical Rotary and reciprocating plant pumps & valves, oils, corrosive gases, food-
processing and pharmaceutical industries. Dyestuffs, synthetic resins, paints, pulp & paper sector
chemicals. Equipment glands where no contamination is allowed.  Not recommended to use on molten
metals and gaseous fluorine.
Size  mm 4 5 6 8 10 12 14 15 16 18 19 20
approx. mtr. / kg 35 22 16 9.0 5.6 3.9 2.9 2.5 2.2 1.7 1.5 1.4
Prime Features :
Pressure  Psi bar   to 300 psi (20 bar) rotary/ centrifugal;  to 2000 psi (138 bar) valves
Shaft speed M/s   to 4500 rpm
Density g/cm3 1.3
Temperature °C -4500F (-2700C) to +5000F(+2600C)
PH range    0-14
Size Dimensions
Clean non contamination and graphite free.
Long maintenance free service life.
Minimal shaft wear and leakage
Superior performance over other pure white packings.
Ideal for food processing applications
Pliable, wear-resistant and dimensionally stable
Resists most chemicals & caustic media
Rugged and non-toxic
High density, dimensionally stable - very little water absorption
Competitive price, good quality
Service Limits, Application Parameter :

True Value Gland Packings and Gaskets
Product Description :

Krishna House, Azad Nagar, Khemani,
Ulhasnagar, Thane, Mumbai - 421 002,
Maharashtra, INDIA

At Your Service... 24 X 7

Krishna Singh - +91-9975240272
Sunjay Singh - +91-94 22 076 287 /+91-95 45 176 287

Tel. / Fax no. :+91 251 2713451
Email :

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