V. DIPESH KUMAR & CO. OFFERS RANGE

PTFE RODS, BUSHES, TUBES & PARTS

PTFE Rods

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

Ptfe_Sheets

moulded_machined_finished_product

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-50^oC to + 260^oC 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.

Ptfe RODS AND TUBES

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 Break	%	ASTM D-638	250-400	200-300	100-150	80-160
4.Compressive strength	kgf/cm²	ASTM D-695	40-50	75-85	75-85	115-125
5.Compressive modulus	kgf/cm²		4000	7000	8400	8800
6. Deformation	%	ASTM D-621
A. 2 Hrs.23⁰C, 140 kg/cm² B. 24 Hrs.23⁰C, 140 kg/cm² C. Permanent			12 15 8	9 11 7	4 5 2.5	4 5 2.5
D. 2 Hrs.150⁰C, 200 kg/cm²			50	50	33	40
7.Flexural Modulus	kgf/cm²	ASTM D-790	57	42	96	80
8. Flexural Modulus	kgf/cm²	ASTM D-790	3500-6300	16700	11900	13800
9.Impact strength	cm kg cm²	ASTM D-256
A. -20⁰C B. +20⁰C			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 friction
A. Dynamic P-7 kg/cm²V-0.5 m/sec			0.06	0.5-0.54	0.31-0.37	0.12-0.17
B. Static P-35 kg/cm²			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		-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 expansion	%	ASTM D-696	Axial-Radial	Axial-Radial	Axial-Radial	Axial-Radial
A. 30-150⁰C			1.5 1.5	1.5 0.7	1.2 1	1.1 0.9
B. 30-200⁰C			2.4 2.3	2.2 1.0	1.9 1.5	1.8 1.5
C. 30-250⁰C			3.4 3.6	3.2 1.4	2.7 2.4	2.5 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 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.
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