Abstract:
A seal assembly includes a seal body, a spring disposed adjacent to the seal body, and a seal ring disposed adjacent to the seal body. The seal body and the seal ring can include a plastic polymer material. The seal assembly can be a subcomponent of hydraulic strut in the landing gear of an aircraft.
Abstract:
A rotary shaft seal including an annular body having an aperture defining a central axis and an inner surface; a sealing element positioned at least partially within the annular body, wherein the sealing element is configured to extend radially and form a seal between the annular body and a shaft disposed within the aperture of the annular body; and a biasing element biasing at least a portion of the sealing element in a radial direction.
Abstract:
A torque limiting assembly is disclosed and can include a generally cylindrical bearing and a tolerance ring disposed around the generally cylindrical bearing. The torque limiting assembly is configured to be installed between and rotatably couple an inner and an outer component. The torque limiting assembly is configured to rotate with respect to at least one of the inner and outer components when a threshold torque, T, is exceeded.
Abstract:
A transparent composite can include a textured substrate and a solar control layer. Portions of the solar control layer may lie at different elevations that are separated by a sidewall of the textured substrate. The portions may be electrically disconnected from each other or include other portions that are highly resistive. In an embodiment, the solar control layer can be non-conformally deposited over the textured substrate. The solar control layer can be formed such that there are no lateral gaps between portions of the solar control layer. In a particular embodiment, the transparent composite can have good transmission of visible light and high frequency signals while still achieving suitably low transmission of near infrared radiation.
Abstract:
The present disclosure relates to bearing and seal assemblies comprising a composite structure which includes a substrate and a layer disposed on the substrate. The layer disposed on the substrate includes a polyimide matrix and a filler dispersed within the polyimide matrix. The filler can be a thermoplastic polymer, such as PTFE, and/or an organic filler. The bearing assembly can exhibit a synergistic improvement in wear resistance and coefficient of friction.
Abstract:
The present disclosure relates to methods of making an article comprising PTFE, methods of making expanded articles comprising PTFE, articles comprising PTFE, and expanded articles comprising PTFE having improved mechanical and electrical performance and particularly reduced variability in mechanical, electrical and dimensional properties, particularly over long lengths.
Abstract:
A stem packing assembly including a first annular member defining a central axis, a second annular member defining a central axis coaxial with the central axis of the first annular member, and an annular energizing member defining a central axis coaxial with the central axis of the first annular member. In an embodiment, the stem packing assembly can have a leakage rate according to ISO 15848-1 of less than 1×10−4 mgs−1m−1 for at least 500 cycles at 160° C., and less than 1×10−4 mgs−1m−1 for at least 500 cycles at −46° C. In another embodiment, the first annular member can include a PAEK, the second annular member can include a PTFE, and the annular energizing member at least partially includes a PTFE.
Abstract:
The disclosure is directed to a silicone article. The silicone article includes a silicone composition, the silicone composition including a silicone matrix component, a fumed silica filler; and a vinyl-terminated silicone polymer having a viscosity of about 500 centipoise to about 5000 centipoise, wherein the silicone article has a turbidity of less than about 0.3 nephelometric turbidity units (NTU). The disclosure is further directed to a tube and to a method of forming the article.
Abstract:
A container includes an inner bag, where the interior of the inner bag includes a sterile environment for storing a material, at least one access port configured to provide fluid access to the interior of the inner bag, an overwrap bag, where the interior of the overwrap bag includes a sterile environment for storing the material and where the inner bag is enclosed within the interior of the overwrap bag, and an overwrap access port configured to provide fluid access to the interior of the overwrap bag. The material can include a biomaterial. Each of the inner bag, the overwrap bag, the at least one access port, and the overwrap access port can include a fluoropolymer such as fluoroethylenepropylene (FEP).