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O-ring seals

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Published: 01 January 2003
Fig. 7 Left: schematic representation of a clamp-on cell with O-ring seal that allows conventional EIS to be performed on areas of large structures. Right: schematic representation of in-situ corrosion sensor, which allows EIS to be performed under ambient conditions without electrolyte. More
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006371
EISBN: 978-1-62708-192-4
... elastomeric materials such as O-rings, which merely react to a sealed fluid pressure, and passive materials that require clamping forces to achieve sealing, such as gaskets. The types of dynamic seals include rotary seals and reciprocating seals. The article describes the factors affecting seal wear...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001732
EISBN: 978-1-62708-178-8
...-induced Fluorescence Spectroscopy As part of a study to evaluate the safety of casks designed for transporting special nuclear materials, fixtures were designed that would allow leak testing of O-ring seals. Uranium dioxide (UO 2 ) powder was added to one side of the O-ring seal, and the seal...
Image
Published: 31 December 2017
Fig. 5 Mechanical shaft seals. (a) Spring energized seal for a pump. 1: shaft; 2: stationary ring; 3: rotating ring; 4: back plate; 5: impeller. (b) O-ring energized face seal. 1: static ring; 3: rotating ring; 2 and 4: O-ring energizers and acting as secondary sealing elements. Source: Ref 4 More
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003848
EISBN: 978-1-62708-183-2
... is the preferred color for O-ring materials other than silicones and fluorosilicones” (OR-10, 1983). However, for typical organic solvents, filler content (carbon black or nonblack) may not affect seal performance. Since carbon black is the most effective filler material to optimize mechanical and chemical...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004129
EISBN: 978-1-62708-184-9
..., which implies soldered, brazed, or welded. It does not mean an O-ring seal, potted connector, or some similar organic material seal. Rubber seals, for example, often leak because of the physical properties of rubber. Unconfined rubber occupies a known volume, but under a load, the rubber tends...
Image
Published: 31 December 2017
-butadiene-rubber (NBR) O-ring. Source: Ref 13 More
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006429
EISBN: 978-1-62708-192-4
... Sublimation (evaporation) ion pump Sputter ion pump Cryopump Cryosorption pump Seals for Vacuum Pumps Elastomeric seals like O-rings are often used for vacuum pumps and vacuum chambers. The requirements for the seals are: lower level of transmission gas, lower level of emission gas, lower...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005734
EISBN: 978-1-62708-171-9
... Process (a) Applications Ceramics (oxides) Cr 2 O 3 , Al 2 O 3 , TiO 2 (mixtures thereof) PS, OFR, DG Mechanical seals, pump sleeves, wire-drawing blocks and capstans, textile rolls and guides Cermet (carbide) composites WC/Co, WC/Co/Cr, WC/Ni, WC/NiCr, WC/Cr 3 C 2 /Ni/NiCr, WC/NiCrSiBC...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003654
EISBN: 978-1-62708-182-5
... into the field are available. Alternative means of inspecting large structures have also been introduced to expand the types of systems that can be examined by EIS. The first of these is a clamp-on electrochemical cell (essentially a bottomless beaker with an O-ring seal at the bottom) ( Fig. 7 , left) that can...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002148
EISBN: 978-1-62708-188-7
... industry and by other manufacturers of large thin-section parts ( Fig. 6 ). Fixtures are designed with O-ring seals near the perimeter of the part. A vacuum is then pulled inside the O-ring area to draw the part into the fixture. Because of the large surface area of the part, high clamp force can...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003061
EISBN: 978-1-62708-200-6
... and paper, mining, and power generation pump applications. These are often larger-diameter rings for larger shafts. The seal materials are usually Al 2 O 3 , SiC, and tungsten carbide (WC). The Al 2 O 3 compositions are normally 99.5% or purer. The SiC materials are either reaction bonded or direct...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003680
EISBN: 978-1-62708-182-5
... react with hot water to convert to a crystalline hydroxide, a pseudoboehmite, as described by: (Eq 9) Al 2 O 3 + x H 2 O = Al 2 O 3 ⋅ x H 2 O where x is 1.5 to 2. The volume expansion by the formation of pseudoboehmite causes the pores to be sealed, as shown...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006834
EISBN: 978-1-62708-329-4
... definitions of REB properties and their nomenclature: F ax : Axial load, acting along the REB axis of rotation, and measured in Newtons or kilonewtons (usually noted as O x ) F rad : Radial load, acting perpendicular to the REB axis of rotation, and measured in Newtons or kilonewtons (usually...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006837
EISBN: 978-1-62708-329-4
... arrow indicates the inner seal wear ring position; the journal is colored blue for clarity. Source: Ref 1 The manufacturing process of building the wheelset components is performed by axle, bearing, and wheel manufacturers. The process of manufacturing the wheelsets by pressing the wheels...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006426
EISBN: 978-1-62708-192-4
... in an “X” or face-to-face arrangement. (e) Duplex angular-contact ball bearing with mounting in an “O” or back-to-back arrangement. (f) Pair of angular-contact ball bearings mounted in tandem. (g) Typical construction in a split inner-ring ball bearing, which is mainly used where ball dimensions...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... is part of two of the terms for fretting given above, describes the resultant wear product, red iron oxide (Fe 2 O 3 )—the usual evidence of fretting of opposing steel contact surfaces. However, ordinary red rust (Fe 2 O 3 ·H 2 O) looks the same. The by-product of fretting may also be black iron oxide...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006870
EISBN: 978-1-62708-395-9
... their original shape, making them much more suitable for sealing applications such as O-rings and gaskets. When deformed in compression mode, metals and thermoplastics tend to fracture or undergo permanent deformation with little to no tendency to recover their original shape. In summary, the region of elastic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003020
EISBN: 978-1-62708-200-6
... beyond standard metal-to-metal seals. Precision-ground metal-to-metal shutoffs may be adequate, but in some cases O-rings will be needed to contain resin. Other Similar Processes A common process sometimes referred to as resin transfer molding is the vacuum-assisted resin injection process...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003065
EISBN: 978-1-62708-200-6
... is at least 99% SiO 2 . A large proportion is 99.5% SiO 2 , minimum. For most white glass, the iron content (Fe 2 O 3 ) must be less than 0.03%. Float glass, colored container glass, and fiberglass can tolerate a higher iron content. Other impurities, including refractory heavy mineral chrome and nickel...