V Dipesh Kumar & Co

Pure / Filled PTFE / PTFE Products

PTFE Rods

Dia	: :	3-250 (standard) large sizes made to order
Length	:	300-900 mm (standard)

PTFE Sheets

Sizes available	:	300 x 300 mm to 900 x 900 mm
Thickness	:	3 - 25 mm Thicker sheets available on request

Moulded & Machined Finished Products It is often more efficient to use moulded semi-finished products to avoid excessive machining of relatively expensive materials and also to reduce machining labour and time. The tooling costs are generally very low.

PTFE COATED FIBRE GLASS FABRIC BELTS

V.DIPESH KUMAR & CO. Offers a comprehensive range of advanced performance belts having all inbuilt properties of basic material like :

Dimensionally stability
Temp. resistance-50oC to + 260oC
Light weight

Non stick surface easy to clean
Good heat transfer, Energy saving
Chemically inert

SPLICES :

We offer all the standard splices to assure the best performance and accurate tracking. Basic types of splices are :

Heat Sealed Overlap
Heat Sealed Butt
Fabric Pin Splice
S .S. Alligator
Peek Spiral

PTFE RODS AND TUBES

PTFE (Polytetrafluoroethylene) ram extruded rods are available in standard meter lengths and in diameter ranging from 6 mm to 100 mm. PTFE compression moulded rods available from 12 mm diameter to 300 mm diameter in 300 mm diameter.

PTFE ram extruded tubes are available in outer diameter size ranging from 25 mm to 150 mm with wall thickness 3 mm and up. PTFE compression moulded tubes are available from 20 mm outer diameter to 300 mm with wall thickness 5 mm and up.

We Mould Ptfe Products for Better Tomorrow

PTFE (Ptfe) Coated Fibre Glass Fabrics, Adhesive Tapes and Belts

Physical Properties :

Property	Unit	Test Method	Pure PTFE	25% Glass Filled PTFE	25% Carbon filled PTFE	60% Bronze Filled PTFE
1. Density	gm/cc	ASTM D-792	2.1-2.2	2.25	2.14	3.8
2. Tensile strength	kgf/cm²	ASTM D-638	210-350	125-200	120-155	105-140
3. Elongation at & nbsp; & nbsp; & nbsp; Break	%	ASTM D-638	250-400	200-300	100-150	80-160
4.Compressive & nbsp; & ;nbsp; strength	kgf/cm²	ASTM D-695	40-50	75-85	75-85	115-125
5.Compressive & nbsp; & ;nbsp; modulus	kgf/cm²	& nbsp;	4000	7000	8400	8800
6. Deformation	%	ASTM D-621	& nbsp;	& nbsp;	& nbsp;	& nbsp;
A. 2 Hrs.23⁰C, & nbsp; & nbsp;& nbsp; 140 kg/cm² B. 24 Hrs.23⁰C, & nbsp; & nbsp;& nbsp; 140 kg/cm² C. Permanent	& nbsp; & nbsp;	& nbsp;	12 & nbsp; 15 & nbsp; 8	9 & nbsp; 11 & nbsp; 7	4 & nbsp; 5 & nbsp; 2.5	4 & nbsp; 5 & nbsp; 2.5
D. 2 Hrs.150⁰C, & nbsp; & nbsp; & nbsp; 200 kg/cm²	& nbsp;	& nbsp;	50	50	33	40
7.Flexural & nbsp; & nbsp; Modulus	kgf/cm²	ASTM D-790	57	42	96	80
8. Flexural & nbsp; & nbsp;& nbsp; Modulus	kgf/cm²	ASTM D-790	3500-6300	16700	11900	13800
9.Impact strength	cm kg cm²	ASTM D-256	& nbsp;	& nbsp;	& nbsp;	& nbsp; & nbsp; & nbsp;
A. -20⁰C B. +20⁰C	& nbsp;	& nbsp;	9 15	9.5 11	7.5 10	11 10
10.Hardness	Scale D	Shore	60-65	70-75	70-75	70-75
11. Coefficient of & nbsp ;& nbsp ;& nbsp; & nbsp; & nbsp; friction	& nbsp;	& nbsp; & nbsp;	& nbsp;	& nbsp;	& nbsp;	& nbsp;
A. Dynamic P-7 & nbsp; & nbsp; & nbsp; kg/cm^{2 & nbsp; & nbsp; & nbsp; & nbsp;}V-0.5 m/sec	& nbsp;	& nbsp;	0.06	0.5-0.54	0.31-0.37	0.12-0.17
B. Static P-35 kg/cm²	& nbsp;	& nbsp;	0.05-0.08	1-0.13	0.09-0.11	0.08-0.1
12.Water Absorption	%	ASTM D-570	0	0.013	0	0
13.Heat Resistance	⁰C	& nbsp;	-250 to +260	-250 to +260	-250 to +260	-250 to +260
14.Thermal Conductivity	10^-4 cal cm.S⁰C	cenco Fitch	6	9	13	19
15.Linear Thermal &nbsp ;& nbsp; & nbsp; expansion	%	ASTM D-696	Axial-Radial	Axial-Radial	Axial-Radial	Axial-Radial
A. 30-150⁰C	& nbsp;	& nbsp;	1.5& nbsp; & nbsp; & nbsp; & nbsp; 1.5	1.5& nbsp; & nbsp; & nbsp; & nbsp; 0.7	1.2& nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 1	1.1& nbsp; & nbsp; & nbsp; 0.9
B. 30-200⁰C	& nbsp;	& nbsp;	2.4& nbsp; & nbsp; & nbsp; & nbsp; 2.3	2.2& nbsp; & nbsp; & nbsp; & nbsp; 1.0	1.9& nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 1.5	1.8& nbsp; & nbsp; & nbsp; 1.5
C. 30-250⁰C	& nbsp;	& nbsp;	3.4& nbsp; & nbsp; & nbsp; & nbsp; 3.6	3.2& nbsp; & nbsp; & nbsp; 1.4	2.7 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 2.4	2.5 & nbsp; & nbsp; & nbsp; 2.2
16.Dielectric Strength	kv mm	ASTM D-149	24	12	2	Conductive
17. Volume Resistivity	ohm cm	ASTM D-257	10¹⁸	10¹⁵	10⁴	10⁷
18. Surface Resistivity	ohm	ASTM D-258	10¹⁵	10¹⁵	10⁷	10⁹
19. Chemical & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; Resistance	PTFE is chemically inert & unaffected by all known chemicals except molten or dissolved alkali metals-Sodium, Potassium, Rubidium, Cesium, Francium & Fluorine Gas. certain fluorine compounds & complexes at elevated temperatures. Filled PTFE has interior chemical resistance because of the presence of the particular filler.

PTFE RODS, BUSHES, TUBES & PARTS

Expanded PTFE Joint Sealant :
Service Limits
ph range: 0-14
Temperature Limits: -260~ + 260 ℃(-500/+500°F)
Pressure Limit: 20Mpa (or 2900 psi; or 200kgf/cm2)

Physical Properties
Material: 100% PTFE, soft and excellent elasticity.
Density: 0.7~0.8g./cm3 (43~49.5lbs./cu. ft.3)
Elongation: 20%
Matrix Tensile Strength: 30Mpa (4260 psi)
Creep Relaxation (ASTM F38): 51%
Sealablity (ASTM F 37A): 0.1 ml/hr.

Description
Expanded PTFE joint tape is a multi-purpose gasket tape manufactured from 100% expanded PTFE fluorocarbon material, supplied as a continuous low density tape with a self-adhesive backing strip. It is soft and spongy, permitting it to conform easily to all surface irregularities and to compress to a thin ribbon under pressure.

Application
Expanded PTFE joint tape is recommended as a gasket tape in steel, glass-lined, PVC and fiberglass pipe flanges, fume ducts, concrete lids, heat exchangers, fiber glass reinforced plastic vessels, pump housing flanges, steam vessel flanges, manhole and manhole covers, ceramic joints, ventilation ducts, hydraulic and pneumatic systems, water supply systems and turbine cases.

Chemical Resistance
Because Expanded PTFE joint tape is manufactured from 100% PTFE, it is an inert material which can be used in many applications against corrosive environments, except molten alkali metals and elemental fluorine. 24B will not contaminate media and can be used in food and drug equipment applications.