Abstract: Gaskets, including aircraft gaskets, are disclosed, the gaskets having an elastomeric gel body and substantially incompressible skeletons. The bodies may be pliable and deformable and, in one example, may be comprised of a two-part chemically cured polyurethane that sets up as a gel after mixing with the web so that it is fully integral with the web and so that there is substantially no air bubbles or air pockets left in the web. The web may be a regular shaped web and made of nylon.

Abstract: Fireworthy sealants may have a variety of compositions and be made by a variety of techniques. In certain implementations, a fireworthy sealant may include a body comprised of a cured, tacky, soft, deformable non-adhesive gel. The gel body may have an upper surface, a lower surface, and a perimeter, wherein the upper and lower surfaces of the gel body, in an uncompressed state, define a body thickness. The sealant may, in an uncompressed state, be dimensioned to fit in a first opening between a wall and an aircraft component surface and deformable when under compression to fit in a second opening, smaller than the first opening. The sealant may be flame retardant and produce low smoke density and low smoke toxicity.

Abstract: The subject application relates to a cupseal for a compressor and method for preparing the same. Systems and methods are disclosed that include providing an annular seal for a compressor. The annular seal includes a substantially planar first portion, a first angled portion extending at an angle from the substantially planar first portion, and a second angled portion extending radially at an angle from the first angled portion. The annular seal is formed from a fluorinated polymer and includes at least one additive or filler. The annular seal exhibits reduced wear and an increased lifespan.

Abstract: Systems and methods include providing an annular bimetallic seal for an assembly. The bimetallic seal includes a first sealing component formed from a first material, a second sealing component formed from a second material that is different than the first material, and a joint formed between the first sealing component and the second sealing component. The bimetallic seal is configured to form a radial seal between a first assembly component and a second assembly component formed from dissimilar metallic materials. The coefficient of thermal expansion (CTE) of the first material and the second material are configured maintain the radial seal at extreme operating temperatures between the dissimilar metallic materials of the components of the assembly.

Abstract: A double seal includes two sliding seals. The seals can be non-pusher secondary seals (NPSS). In one embodiment, by employing an NPSS as the chamber side seal can handle large pressure reversals where the inner diameter pressure (pressure in the chamber) spikes and exceeds the outer diameter pressure that is provided between the two seals forming the double seal.

Abstract: The mixing apparatus includes a first container, wherein the first container comprises: a first port; and a mixing chamber. The mixing apparatus further includes a second container where the second container is adapted to receive the first container, and a seal disposed between the first container and the second container. In addition, the mixing apparatus includes a channel between the first port and the mixing chamber, where the channel is defined by the seal and the first container. In some examples, the seal includes: a first seal portion; and a transition seal portion, the transition portion includes a seal split; and an air intake channel.

Abstract: Provided is a sealing ring and a sealing system. The sealing ring, in one aspect, includes a sealing ring member having an inside diameter face, an outside diameter face, a primary seal side face, and a gland side face. The sealing ring according to this aspect further includes a secondary seal coupled to at least one of the inside diameter face, the outside diameter face, the primary seal side face or the gland side face.

Abstract: A metal O-ring is provided. The metal O-ring has a sidewall with an outer surface and an inner surface. The outer surface of the sidewall is machined to selectively thinning the thickness of the sidewall, such that the sidewall of the of the metal O-ring has a plurality of thicknesses equal to or less than a maximum thickness and equal to or more than a minimum thickness. Selectively thinning the sidewall by machining the outer surface allows for control of the elasticity of the metal O-ring. Controlling the elasticity of the metal O-ring, and potentially increasing the spring back, may provide for increased contract pressure at a sealing interface, which would facilitate sealing. The machined outer surface of the metal O-ring are generally machined to flat surfaces.

Abstract: One or more packing systems and/or methods of manufacture are disclosed for a valve seal with lowered emissions while being complaint with fire standards. The packing system may have alternating mid-layers, a top layer, a bottom layer, and a first end cap and a second end cap. The layers can be formed of a flexible graphite-based material and/or a perfluoroalkoxy alkane (PFA) material. The layers may be bonded together and expand under compression to form a seal between a valve stem and a stuffing box.

Abstract: A seal assembly includes a housing that includes a seal flange at least partially defining a seal opening. A carbon seal is located at least partially in the seal opening and includes a first axially facing surface. The seal flange includes an axially facing surface that has a carbide based coating and a diamond-like carbon coating in engagement with the first axially facing surface on the carbon seal.

Abstract: A method for manufacturing a piston ring includes the following steps: (A) a step of supplying an arc current to a cathode formed of a carbon material having a density of 1.70 g/cm3 or more, to ionize the carbon material; and (B) a step of applying a bias voltage in an environment where hydrogen atoms are substantially absent to form a DLC film on a surface of a base material for a piston ring. The step (A) is continuously carried out, subsequently the step (A) is interrupted, and then the step (A) is restarted, which sequence is repeated thereby to form the DLC film having an extinction coefficient of 0.1 to 0.4 as measured using light having a wavelength of 550 nm and a nanoindentation hardness of 16 to 26 GPa.

Abstract: An apparatus has: a first member; a shaft rotatable relative to the first member about an axis; and a seal system. The seal system has: a seal carried by the first member and having a seal face; a seal carrier; a seat carried by the shaft and having a seat face in sliding sealing engagement with the seal face; and one or more springs biasing the seal carrier relative to the first member so as to bias the seal face against the seat face. The seal carrier has: an axially-extending wall having an inner diameter (ID) surface; and a radially-extending wall having a first surface. The seal carrier axially-extending wall ID surface has a radially inwardly open groove having a first sidewall and a second sidewall and a base. A wave-form split ring contacts the first sidewall and biases the seal into engagement with the radial wall first surface.

Abstract: To provide a piston ring for an internal combustion engine, particularly a second compression ring, which has excellent wear resistance and can achieve both lower fuel consumption and efficient combustion. The above-described problem is solved by a piston ring (1) for an internal combustion engine formed so as to have a tapered shape by a peripheral surface (14) that gradually projects outward from a top to a bottom, and a radial cross-sectional shape of a Napier ring.

Abstract: To provide a seal ring capable of suppressing wear of a mating housing and preventing protrusion from an annular groove and thereby being superior in low leak performance, which is an original object of the seal ring. A seal ring 1 formed of resin is attached to an annular groove 12 formed on an outer periphery of a butterfly valve 11 having a substantially disc shape so as to seal an annular gap 14 between the butterfly valve 11 and a housing 13 in which the valve is housed. A part of the seal ring 1 is protruded from the annular groove 12, so that the seal ring 1 adheres to the housing 13 to seal the annular gap 14 due to pressure from sealed fluid. A radial direction thickness t of the ring is set in a range of 7-11% of a ring outer diameter in a free state. A ring inner diameter in a state in which the diameter is enlarged due to pressure from the sealed fluid when the valve is opened, is smaller than an outer diameter r of the valve.

Abstract: A seal assembly for a gas turbine engine, having a seal formed of a carbon material; and a seal seat positioned for rotation relative to the seal, wherein the seal and the seal seat each have a sealing surface which together define a sliding seal, and wherein at least the sealing surface of the seal seat is made of the same carbon material as the sealing surface of the seal.

Abstract: A centrifugal hydraulic seal between the rotating and non-rotating components of rotating process equipment is provided. The centrifugal hydraulic seal reduces toxic gases inside an operating machine from escaping to the atmosphere or reduces gas from the atmosphere entering into the operating machine by the placement of protruding vanes on the face of the rotating seal wall on the low pressure side of the seal.

Abstract: One or more techniques and/or systems are disclosed for mitigating fluid loss or leakage from a fluid pump with a rotating shaft driving a pumping mechanism. A seal gland component can have two or more internal seals formed by two or more seal components, such as O-rings, that create one or more chambers that act as a lubricant/barrier fluid reservoir to provide for reduced friction and mitigate release of gaseous emissions. Further, the seal gland component can be a retrofit on an existing shaft to provide for greater life and efficiency as compared to the existing packing gland or other sealing components. Further, the one or more internal seals can be arranged within the seal gland in an asymmetrical manner such that the seal gland can be removed from a shaft, rotated, and reinstalled with the internal seals contacting a different position on the surface of the shaft.

Abstract: The invention refers to a pipe seal suitable for use in a Rieber joint, the seal (14) comprising an annular sealing member (18) and an annular reinforcing member (20) completely embedded in the sealing member (18). The reinforcing member (20) is made of a rigid plastic band and the reinforcing member (20) includes, for increasing an area of contact between the sealing member (18) and the reinforcing member (20), at least one protrusion (24) and/or at least one recess (26).

Abstract: A seal assembly includes: a seal element; a part to be sealed; and a measuring arrangement for monitoring an aging of the seal element. The seal element is held on the part so as to provide a contact stress between the seal element and the part. The seal element has a contact face with which the seal element bears against the part. At least one measuring component of the measuring arrangement is integrated in each case into the seal element and into the part. The contact face of the seal element has a surface geometry with depressions.

Abstract: A sealing apparatus which is capable of preventing static leakage of a target to be sealed without increasing sliding resistance with respect to a shaft, and a surface processing method of a disk member of the sealing apparatus which is capable of processing a surface of the disk member, such as a slinger, provided at the sealing apparatus. A surface processing method of a disk member of a sealing apparatus for forming a plurality of fine spiral grooves on a surface of the disk member provided at the sealing apparatus has a grinding member having a plurality of fine projections that is moved to an outer edge side while the grinding member is pressed against the surface of the disk member which relatively rotates around an axis, and the sealing apparatus includes a slinger at which a plurality of fine spiral grooves are randomly formed on another side surface of a flange portion.