TUCRON DOUBLE DELTA

Description

Turcon Double Delta is a rubber energised plastic faced seal. The seal is designed to expand and improve the service parameters of O-Rings and is installed in existing O-Ring grooves.

Double Delta combines the flexibility and response of O-Rings with the wear and friction characteristics of the Turcon materials in dynamic applications.

The fig. below shows the cross section of the Double Delta.

The double acting performance of the seal follows from the symmetrical cross section which allow the seal to respond to pressure in both directions.

Initial contact pressure is provided by radial compression of the O-Ring. When the system pressure is increased the O-Ring transforms this into additional contact pressure, the contact pressure of the seal is thereby automatically adjusted so sealing is ensured under all service conditions.

 

Notches

Turcon Double Delta is as standard supplied without radial notches, as the thin radial section of the seal gives good response to pressure variations.

For diameters from 8 mm notches on both sides are optional. These ensure direct pressurizing of the seal under all operating conditions.

Advantages

– Compact groove dimensions and simple installation
– Low friction without stick-slip
– Resistance against wear and extrusion
– Piston seals available for all diameters from 5 to 999.9 mm
– Standard cross sections cover AS 568A and important metric O-Rings, other cross sections available on request.
– Fits also groove dimensions per MIL-G-5514F

Application Examples

The Turcon Double Delta is the recommended sealing element for double acting pistons of hydraulic or pneumatic cylinders in sectors such as:

• Machine toolsHandling devices
• Manipulators
• Valves
• Chemical process equipment

It is particular recommended for light duty and small diameter applications.

Technical Data

Operating conditions

Pressure: Up to 35 MPa

Velocity: Up to 15 m/s

Temperature: -45_C to +200_C (according to O-Ring material)

Media: Mineral oil, Non-flammable fluids, Environmentally safe fluids and others according to O-Ring material.

Important Note:

The above data are maximum values and cannot be used at the same time. e.g. the maximum operating speed depends on material type, pressure, temperature and gap value. Temperature range also dependent on medium.

Materials

Standard Application:

For hydraulic components with reciprocating movement in mineral oils containing zinc or medium with good lubricating performance and hard mating surface.

Turcon Seal: Turcon T46
Energiser: O-Ring NBR 70 Shore A or FKM 70 Shore A depending on the temperature

Special Application:

Short stroke movements, poor lubricating fluids and
soft mating surfaces.

Turcon seal: Turcon T24
Energiser: O-Ring NBR 70 shore A or FKM 70
shore A (depending on the temp.)

For low friction requirement in dynamic hydraulic components with good lubricating medium:

Turcon seal: Turcon T05
Energiser: O-Ring NBR 70 shore A or FKM 70 shore A (depending on the temp.)

For specific applications other material combinations as listed may also be used. Please contact your local Busak+Shamban Company.

Material for the seal set:

Example: T05 plus FKM – O-Ring T05V
T46 plus NBR – O-Ring T46N

Design Instructions

Lead-in Chamfers

In order to avoid damage to the seal during installation, lead-in chamfers and rounded edges must be provided on the bore or piston rod (Figure).

The minimum length of the lead-in chamfer depends on the profile size of the seal and can be seen from the following tables.

 

Material, Applications, Properties	Code	O-Ring Material	Code	O-Ring  Operating Temp.* °C	Mating Surface Material	MPa max.
Turcon® T46 Standard material for hydraulics, high compressive strength, good sliding and wear properties, good extrusion resistance, BAM tested. Bronze filled Colour: Greyish to dark brown	T46	NBR – 70 Shore A	N	-30 to +100	Steel tubes Steel, hardened Cast iron	35
		NBR – Low temp. 70 Shore A	T	-45 to +80
		FKM – 70 Shore A	V	-10 to +200
Turcon® T24 For all lubricating and non-lubricating hydraulic fluids, soft mating surfaces. Carbon filled Colour: Black	T24	NBR – 70 Shore A	N	-30 to +100	Steel Steel, hardened Cast iron Stainless steel Aluminium Bronze	25
		NBR – Low temp. 70 Shore A	T	-45 to +80
		FMK – 70 Shore A	V	-10 to +200
		EPDM – 70 Shore A	E**	-45 to +145
Turcon® T05 For all lubricating hydraulic fluids, hard mating surfaces, very good sliding properties, low friction. Colour: Turquoise	T05	NBR – 70 Shore A	N	-30 to +100	Steel tubes Steel, hardened	20
		NBR – Low temp. 70 Shore A	T	-45 to +80
		FKM – 70 Shore A	V	-10 to +200

Ordering example

Turcon Double Delta, complete with O-Ring, standard range, series PDD3 (from Table). Bore diameter: DN = 80.0 mm Part No.: PDD300800 (from Table)

Select the material from Table. The corresponding code numbers are appended to the Part No. (from Table). Togeter they form the Order No.
For all intermediate sizes not shown in Table, the
Order No. can be determined from the example opposite.

* ”N” for seals with notches. Available for diameters from
8.0 mm.
For seals for other groove widths/Dimensions please refer
to table.

 

Turcon double delta

Bore Diame- ter	Groove Diame- ter	Groove Width	Part No.	O-Ring Sizes
DN H9	d1 h9	L1 +0.2
6,0	3,1	2,4	PDD000060	2.57 x 1.78
8,0	5,1	2,4	PDD000080	4.47 x 1.78
9,0	6,1	2,4	PDD000090	5.28 x 1.78
10,0	7,1	2,4	PDD000100	6.07 x 1.78
11,0	8,1	2,4	PDD000110	7.65 x 1.78
12,0	9,1	2,4	PDD000120	8.5 x 1.8
12,7	9,8	2,4	PDD000127	9.25 x 1.78
14,0	9,5	3,6	PDD100140	9.19 x 2.62
15,0	10,5	3,6	PDD100150	9.19 x 2.62
16,0	11,5	3,6	PDD100160	10.77 x 2.62
18,0	13,5	3,6	PDD100180	12.37 x 2.62
20,0	15,5	3,6	PDD100200	13.94 x 2.62
22,0	17,5	3,6	PDD100220	17.12 x 2.62
24,0	19,5	3,6	PDD100240	18.72 x 2.62
25,0	18,8	4,8	PDD200250	18 x 3.55
25,4	19,2	4,8	PDD200254	18.54 x 3.53
27,0	20,8	4,8	PDD200270	20.22 x 3.53
28,0	21,8	4,8	PDD200280	20.22 x 3.53
30,0	23,8	4,8	PDD200300	23.40 x 3.53
32,0	25,8	4,8	PDD200320	25.00 x 3.53
35,0	28,8	4,8	PDD200350	28.17 x 3.53
40,0	33,8	4,8	PDD200400	32.92 x 3.53
42,0	35,8	4,8	PDD200420	34.52 x 3.53
45,0	38,8	4,8	PDD200450	37.70 x 3.53
48,0	38,6	7,1	PDD300480	37.47 x 5.33
50,0	40,6	7,1	PDD300500	40.0 x 5.30
50,8	41,4	7,1	PDD300508	40.64 x 5.33
52,0	42,6	7,1	PDD300520	40.64 x 5.33
55,0	45,6	7,1	PDD300550	43.82 x 5.33
56,0	46,6	7,1	PDD300560	43.82 x 5.33
60,0	50,6	7,1	PDD300600	50.17 x 5.33
63,0	53,6	7,1	PDD300630	53.34 x 5.33
65,0	55,6	7,1	PDD300650	53.34 x 5.33
70,0	60,6	7,1	PDD300700	59.69 x 5.33
75,0	65,6	7,1	PDD300750	62.87 x 5.33
80,0	70,6	7,1	PDD300800	69.22 x 5.33
85,0	75,6	7,1	PDD300850	72.39 x 5.33
90,0	80,6	7,1	PDD300900	78.74 x 5.33
95,0	85,6	7,1	PDD300950	81.92 x 5.33

 

100,0	90,6	7,1	PDD301000	88.27 x 5.33
110,0	100,6	7,1	PDD301100	97.79 x 5.33
115,0	105,6	7,1	PDD301150	104.14 x 5.33
120,0	110,6	7,1	PDD301200	107.32 x 5.33
125,0	112,8	9,5	PDD401250	113.67 x 7.0
130,0	117,8	9,5	PDD401300	116.84 x 7.0
135,0	122,8	9,5	PDD401350	120.02 x 7.0
140,0	127,8	9,5	PDD401400	126.37 x 7.0
150,0	137,8	9,5	PDD401500	135.89 x 7.0
160,0	147,8	9,5	PDD401600	145.42 x 7.0
170,0	157,8	9,5	PDD401700	151.77 x 7.0
180,0	167,8	9,5	PDD401800	164.47 x 7.0
190,0	177,8	9,5	PDD401900	177.17 x 7.0
200,0	187,8	9,5	PDD402000	183.52 x 7.0
210,0	197,8	9,5	PDD402100	196.22 x 7.0
220,0	207,8	9,5	PDD402200	202.57 x 7.0
230,0	217,8	9,5	PDD402300	215.27 x 7.0
240,0	227,8	9,5	PDD402400	227.97 x 7.0
250,0	237,8	9,5	PDD402500	236.0 x 7.0
280,0	267,8	9,5	PDD402800	266.07 x 7.0
300,0	287,8	9,5	PDD403000	278.77 x 7.0
320,0	307,8	9,5	PDD403200	304.17 x 7.0
350,0	337,8	9,5	PDD403500	329.57 x 7.0
400,0	387,8	9,5	PDD404000	380.37 x 7.0
420,0	407,8	9,5	PDD404200	405.26 x 7.0
450,0	437,8	9,5	PDD404500	430.66 x 7.0
480,0	467,8	9,5	PDD404800	456.06 x 7.0
500,0	487,8	9,5	PDD405000	481.46 x 7.0

Special Turcon Double Delta
Turcon Double Delta for one Back-up Ring

grooves

Double Delta is avilable for designs where grooves for
O-Ring with one Back up Ring are used according to Table.

Turcon Double Delta for metric O-Rings

Double Delta is available for installation in grooves for metric O-Rings as listed in Table.

Ordering example

Double DeltaR complete with NBR O-Ring
Bore diameter: DN = 80 mm
Groove diameter: 70.6 mm
Groove width: 8.5 mm.
Order No:. PDA300800-T05N