HNBR oil seals

HNBR Simmerings are technical seals used for sealing rotating elements, such as shafts. Made of hydrogenated nitrile rubber, which offers resistance to high temperatures, oxidation, ozone, and atmospheric conditions. HNBR radial shaft seals provide good chemical stability. They show resistance to greases, fuels, mineral oils, and hydraulic fluids. Thanks to good mechanical resistance, they are characterized by low permanent deformation and high tensile strength.

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Simering B" -> "Oil seal B

Simmering B Simmering B is a sealing ring with a metal outer cylindrical surface and a sealing lip equipped with a compression spring. In contrast to popular type A simerings, the B model does not have an elastomeric coating on the outer circumference - the entire construction is made in the form of a metal housing. This design ensures precise fitting in the groove, resistance to deformation, and higher dimensional stability under elevated temperatures and loads. Type B

Product	Mpn	Material	Internal diameter [mm]	Outer diameter [mm]	Height [mm]	Price gross
Simering B	SB10 x17x5xNBR	NBR	10	17	5	On request
Simering B	SB14 x30x8xNBR	NBR	14	30	8	On request
Simering B	SB15 x24x7xNBR	NBR	15	24	7	On request
Simering B	SB15 x35x10xNBR	NBR	15	35	10	On request
Simering B	SB16 x22x4xNBR	NBR	16	22	4	On request
Simering B	SB16 x30x7xNBR	NBR	16	30	7	On request
Simering B	SB17 x35x7xNBR	NBR	17	35	7	On request
Simering B	SB17 x40x10xNBR	NBR	17	40	10	On request
Simering B	SB18 x35x7xNBR	NBR	18	35	7	On request
Simering B	SB20 x32x7xNBR	NBR	20	32	7	On request
Simering B	SB20 x35x7xNBR	NBR	20	35	7	On request

Go to product, available 105 variants

Simering BO / BS

Simmering BO/BS Simmering BO/BS is a sealing ring with a metal casing and two sealing lips, one of which – the working lip – is equipped with a pressure spring, while the other serves as a dust lip (without a spring). The outer metal surface ensures precise and rigid fitting in the housing, which is particularly important in applications exposed to high temperatures, intense mechanical loads, and aggressive media. The dust lip effectively protects against external

Product	Mpn	Material	Internal diameter [mm]	Outer diameter [mm]	Height [mm]	Price gross
Simering BO	SBO6 x10x2xNBR	NBR	6	10	2	On request
Simering BO	SBO7 x11x2xNBR	NBR	7	11	2	On request
Simering BO	SBO10 x14x3xNBR	NBR	10	14	3	On request
Simering BO	SBO12 x16x3xNBR	NBR	12	16	3	On request
Simering BO	SBO12.7 x22.22x3.17x	NBR	12,7	22.22	3.17	On request
Simering BO	SBO16 x22x3xNBR	NBR	16	22	3	On request
Simering BO	SBO20 x28x4xNBR	NBR	20	28	4	On request
Simering BO	SBO22 x28x4xNBR	NBR	22	28	4	On request
Simering BO	SBO24.7 x30x4xNBR	NBR	24,7	30	4	On request
Simering BO	SBO28 x35x5xNBR	NBR	28	35	5	On request
Simering BO	SBO28.57 x35.1x4xNBR	NBR	28,57	35.1	4	On request

Go to product, available 12 variants

What are radial shaft seals made of HNBR?

Radial shaft seals made of HNBR (Simmer rings, oil seals) are professional technical seals that retain lubricant in equipment with rotating shafts, as well as prevent contamination of the system by external particles (dirt, dust, water). They are characterized by high resistance to thermal aging, ozone, mineral oils, and fuels, as well as very good mechanical properties. HNBR oil seals are used to seal rotating shafts in engines, pumps, gearboxes, and hydraulic systems.

Application of HNBR O-rings

HNBR seals are perfect for applications requiring high resistance to temperature, oils, fuels, and working pressures. Thanks to their ozone resistance, oxidation, and weathering, Simmer HNBR rings made of hydrogenated nitrile rubber ensure long-lasting tightness and dimensional stability.

Application of HNBR seals:

Internal combustion engines - sealing crankshafts and timing mechanisms exposed to high temperatures and engine oil.
Compressors and pumps - operating in an oil-gas environment at elevated pressure and temperature.
Mechanical transmissions and gearboxes - protection against leakage of gearbox oil and internal contamination.
Hydraulic and oil pumps - maintaining sealing between the wet and drive parts of the system.
Industrial equipment - drives, process machines, and lubrication systems operating under dynamic conditions and thermal loads.

What are the benefits of using HNBR rotary shaft seals?

The use of rotary shaft seals made of HNBR rubber significantly extends the service life of drive shafts and hydraulic systems, reducing downtime and maintenance costs. High resistance to mineral oils, fuels, greases, and high temperatures allows HNBR seals to maintain tightness during long working cycles. This improves machine reliability and operational safety. Their application minimizes the risk of leaks and loss of lubricant in rotating machine components, leading to lower maintenance costs and higher technical efficiency.

Where to buy HNBR oil seals?

At Power Rubber, we offer HNBR oil seals with high resistance to oils, fuels, greases, and hydraulic fluids. They work perfectly in demanding industrial applications to seal machine and equipment components in rotary motion (rotor shafts, crankshafts, drive shafts). They provide high resistance to mineral oils, greases, fuels, hydraulic fluids, and temperature stability. Available in various dimensions and types. We provide our customers with professional technical advice and efficient order fulfillment.