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
BRAND :- SIGMA PLACE OF ORIGIN : INDIA
CERTIFICATION :- API, ISO 9001
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.
Product Description
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.
Service Limits, Application Parameter
Specification |
|
|---|---|
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
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
- 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