compound with good mechanical characteristics and optimum resistance to mineral oils and greases. According to the quantity if acrylo-nitrile one can formulate materials with very good resistance to fuels and to low temperatures. These compounds are not compatible with ozone (if not especially formulated)

GENERAL PROPERTIES
Specific weight of the compounds: 1,15 ÷ 1,50 *
Obtainable hardness Shore A or IRHD 40 ÷ 90
Minimum temperature of use: -15°C ÷ -30°C * (-40°C) **
Maximum temperature of use: +100°C ÷ +110°C * (+130°C) **

* depending from the types ** with a specific optimal formulation

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NBR

BASIC POLYMER HARDNESS	TECNOGOMMA CODE	UTILIZATION TEMP. (°C)	PARTICULAR CHARACTERISTICS AND APPROVALS

NBR 70	F / 700	-30 / +125 (+135)	Oil and mineral greases resistance; good C-set. Approvals: DVGW for gas: DIN EN 549 B2 (-20 / +80°C) H3 N°NG-5112AT0428; it will expire on 30/11/2013. DVGW VP 406-A 7.
	GN / 70 (1) FB / 70 (2) GMN / 70 (3)	-30 / +125	Oil and mineral greases resistance. (1-2-3) Nitrile compounds without any approval.
	FCM / 70	-30 / +125	Oil and mineral greases resistance cheap nitrile compound. Approvals: DVGW for gas: DIN EN 549 B1 (0/+80°C) H3, N° NG-5112BL0149; it will expire on 24/03/2015. DVGW VP 406-A 7.
	POP / 70	-40 / +125 (+135)	Oil and mineral greases resistance even at low temperatures. Approvals: DVGW for gas: DIN EN 549 B2 (-20 / +80 °C) H3 N° NG-5112AO0655; it will expire on 31/03/2013. DVGW VP 406-A 7.
	NBR OZ / 70	-25 / +100 (+125)	Ozone and atmospheric agents resistance.
	TGB / 70	-10 / + 80	High nitrile; petrol and gas oil resistance.
	TEIL 3 / 70	-25 / +100 (+125)	Ozone, oil and mineral greases resistance.
	FTA / 70	-30 / +100	Petrol and fuel resistance, even at low temperatures and ozone resistance accord.to specifications Volkswagen 2.8.1 A-T.
	WRC / 70	-25 / +125	Oil and mineral greases resistance. Approvals: WRAS (BS 6920) for cold drinking water. It will expire on: November 2013. KTW (1.3.13 D2) for drinking water, cold and warm up to 85°C; it will expire on 24/03/2016. DVGW-W270 E (02/2007) for drinking water; it will expire on 02/07/2012. DVGW for gas: DIN EN 549 B1 (0/+80 °C) H3, N° NG-5112AO0668; it will expire on 30/06/2013. DVGW VP 406-A 7. In compliance with FDA (177.2600-21) requisites for food; indeterminate expire date. NSF (standard 61) for drinking water, cold and warm up to 82 °C; cert. N° #74370-01. CLP (DGS/VS4 n° 2000/232 du 27/04/2000 Annexe C) for drinking water; it will expire on 07/06/2012. In compliance with the requirements of D.M. 06/04/04 n° 174.
	TEC N26 / 70	-25 / +125	Oil and mineral greases resistance. KTW (1.3.13 D1-D2) approval for drinking water, cold and warm up to 85 °C; it will expire on 21/11/2012.
	TEC N31 / 70	-30/ + 125 (+135)	It's an evolution of the compound ICA-70 and therefore it replaces it. Oil, mineral greases and ozone resistance. Approvals: DVGW for gas: DIN EN 549 B2 (-20/+80°C) H3, N° NG-5112BP0259; it will expire on 22/04/2014. DVGW VP 406. EN 682 Type GBL (-15/+50°C).
	GALA / 70	-25 / +125	Oil and mineral greases resistance. CLP approval (DGS/VS4 n°2000/232 du 27/04/2000 Annexe C) for drinking water; it will expire on 23/07/2013.
	TEC N41 / 70	-25 / +125	Oil, mineral greases and ozone resistance. Approvals: WRAS (BS 6920) for cold drinking water. It will expire on 10/04/2012. AS/NZS (4020) for cold drinking water. KTW (1.3.13 D1-D2) for cold drinking water. It will expire on 29/09/2016. DVGW-W270 (11/2007) for drinking water; it will expire on 07/10/2013. DVGW for cold drinking water, N° DW-5213BS5032; it will expire on 12/06/2012. EN 681-1 Typ WA and WC. DVGW for gas: DIN EN 549 B1 (0/+80 °C) H3, N° NG-5112BT0269; it will expire on 10/06/2013. DVGW VP 406-A 7. DVGW for gas: DIN EN 682 Typ GBL (-15/+50 °C), N° NG-5113BU0379; it will expire on 06/10/2014. NSF (standard 61) for drinking water, cold and warm up to 82 °C; cert. N° #74370-01. CLP (DGS/VS4 n° 2000/232 du 27/04/2000 Annexe C) for drinking water; it will expire on 15/05/2013. In compliance with the requirements of D.M. 06/04/04 n° 174. KIWA (BRL-K17504) for cold drinking water.
NBR 70 peroxide	BS / 70	-30 / +125 (+135)	Oil and mineral greases resistance. In compliance with FDA (177.2600-21) requisites for food; indeterminate expire date.
NBR 65	TGBF / 65	-30 / +80	High nitrile; petrol and gas oil resistance, for low temperatures
NBR 60	N / 60	-30 / +125 (+135)	Oil and mineral greases resistance. DVGW approval for gas: DIN EN 549 B1 (0/+80°C) H2, N°NG-5112AQ1469 it will expire on 31/07/2015. DVGW VP 406-A 7.
	FB / 60	-30 / +125	Oil and mineral greases resistance; compound having any approval.
	POP / 60	-40 / +125	Oil and mineral greases resistance even at low temperatures. Approvals: DVGW for gas (for diaphragms too): DIN EN 549 B2 (-20 / +80 °C) H3, N° NG-5139AS2923; it will expire on 28/02/2014. DVGW VP 406-A 7.
	POP OZ / 60	-40 / +125	Ozone resistance, Oil and mineral greases resistance even at low temperatures. Approvals: DVGW for gas: DIN EN 549 B2 (-20 / +80 °C) H2, N° NG-5112BU0063; it will expire on 10/03/2014. DVGW VP 406-A 7.
	TECNOGOMMA / 60	-30 / +100	Oil and mineral greases resistance. In compliance with FDA requisites (177.2600-21) for food; indeterminate expire date.
	TGB / 60	-10 / +80	High nitrile; petrol and gas oil resistance.
	TEC N31 / 60	-30 / +125 (+135)	Oil, mineral greases and ozone resistance. Approvals: DVGW for gas: DIN EN 549 B2 (-20/+80°C) H2, N° NG-5112BP0258; it will expire on 01/04/2014. DVGW VP 406-A 7. EN 682 Type GBL (-15/+50°C).
NBR 55	TECNOGOMMA N1 / 55	-30 / +100	Oil and mineral greases resistance. Approvals: KTW (1.3.13 D1-D2) for drinking water cold and warm up to 85°C; it will expire on 24/03/2016. NSF (standard 61) approval for drinking water cold and warm up to 82°C; cert. N° #74370-01. In compliance with FDA requisites (177.2600-21) for food; indeterminate expire date. CLP (DGS/VS4 n° 2000/232 du 27/04/2000 Annexe C) for drinking water; it will expire on 18/04/2013.
	TGBA / 55	-10 / +80	High Nitrile, petrol and gas oil resistance; ozone resistance.
	TEC N41 / 55	-25 / +125	Oil, mineral greases and ozone resistance. KIWA (BRL-K17504) approval for cold drinking water.
NBR 50	TEC N13 / 50	-30 / +100	Oil and mineral greases resistance. Approvals: DVGW for gas (for diaphragms too); DIN EN 549 B2 (-20/+80 °C) H2, N° NG-5139AT2769; it will expire on 30/09/2013. DVGW VP 406-A 7.
	N / 50	-30 / +100	Oil and mineral greases resistance; nitrile without any approval.
NBR 40	GMN / 40	-30 / +100	Oil and mineral greases resistance.
NBR 80	PA / 80	-25 / +125	Oil and mineral greases resistance. Approvals: DVGW for gas: DIN EN 549 B2 (0/+80°C) H3, N° NG-5112AM0282 ; it will expire on 30/09/2016. DVGW VP 406-A 7.
	FB / 80	-25 / +125	Oil and mineral greases resistance; nitrile without any approval.
	POP / 80	-40 / +125	Oil and mineral greases resistance, even at low temperatures. Approvals: DVGW for gas: DIN EN 549 B2 (-20/+80 °C) H3; N° NG-5112AT0118; it will expire on 30/04/2013. DVGW VP 406-A 7.
	TEC / 80	-25 / +125	Oil and mineral greases resistance. Approvals: DVGW for gas: DIN EN 549 B1 (0/+80°C) H3, N°NG-5112AQ1565; it will expire on 31/08/2015. DVGW VP 406-A 7. KTW (1.3.13 D1-D2) for drinking water cold and warm up to 85°C; it will expire on 31/03/2016. In compliance with FDA requisites (177.2600-21) for food; indeterminate expire date. CLP (DGS/VS4 n°2000/232 du 27/04/2000 Annexe C) for drinking water; it will expire on 19/11/2012.
	TEC N31/ 80	-30/ + 125 (+135)	Oil, mineral greases and ozone resistance. Approval: EN 682 Type GBL (-15/+50°C).
NBR 90	N / 90 (1) N / 91 (2)	-25 / +125	Oil and mineral greases resistance. (1-2) Nitrile compound, interchangeable for the production process. (1) Approvals: DVGW for gas: DIN EN 549 B1 (0/+80 °C) H3, N°NG-5112BS0204; it will expire on 05/04/2017. DVGW VP 406-A 7.
	POP / 90	-30 / +125	Oil and mineral greases resistance even at low temperatures.

This is a work sheet issued by DVGW in addition to the EN 549 or EN 682 approvals for gas application in Germany market.

The work-sheet is subdivided in two parts:
The first one, which has already been obligatory in addition to EN 549 and EN 682 approvals, requires an identification test of the elastomeric material (through the IR technique).

The second one is still optional by now, and requires the following tests: Ozone resistance, Stress relaxation Tests, Compression set at condition of 3000 h at 70o C, with the surveillance of the compression set each 1000 h.

This test has the clearly intention to value the material behaviour in a quite significant time set. The maximum admitted compression set value has not been fixed.

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Certified Productive DWGW Process

Compounds

Glossario Approvazioni

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