Sealey Ak522 O-Ring and Seal Pick

Product Information

Compared to the 111 size, the M2.4X11.3 size is slightly smaller cross section and slightly larger diameter with a good fit for the O-ring groove of the DIN connectors on Cressi and Poseidon regulators. Because of availability, most Nitrox and technical divers make do with a 111 size O-ring for their Cressi and Poseidon regulators, but the 111 is not as good a fit for the connector of those two brands. The o-ring has a durometer of 70 Shore A. Shore A is a commonly used durometer scale to measure the hardness of rubber materials. The Shore A scale measures the indentation hardness of the material, which is the material's resistance to permanent indentation or deformation caused by a sharp object pressing against it. The higher the number on the Shore A scale, the harder and less flexible the material. A durometer of 70 Shore A means that the material has a medium hardness, with some resistance to deformation under pressure but still capable of some degree of flexibility. Common seal in regulator balance chambers; Power inflator stems; CO2 detonators; SAS gland seal. Sherwood 5121-101,6500-118, Scubpro 1.050.117, Mares 46110101, Apeks ID: AP1299 In the European Union nations, the EN 144-3:2003 standard requires a valve outlet known as M26x2 to be used on dive cylinders containing oxygen or Nitrox mixtures with greater than 22% oxygen. The M26x2 outlet is similar in appearance but slightly larger than the standard DIN outlet, and thus incompatible with the standard DIN connector found on SCUBA regulators. The purpose of this incompatible valve outlet is to force the dedication of cylinders, regulators and fill stations to Nitrox use. The sealing O-ring in the nose of the M26x2 connector is 13.9 X 2.6 metric dimensions, equivalent to the 113 size. The M26x2 outlet and connector for Nitrox and oxygen is very rarely seen outside the EU. O-rings Available from The Scuba Doctor In the USA the Society of Automotive Engineers (S.A.E.) publishes AS568B as an Aerospace Standard that specifies sizes for O-rings used in sealing applications. The equivalent British Standards Institution publication is BS1806, which lists all Imperial standard sizes. This standard includes all of the 5 main cross section groups in AS568, plus several sizes that are "between" AS568 sizes. In Australia BS1806 is widely referenced in many industries, including the dive industry.

The milky white O-ring occasionally seen in the face of K-valves, sometimes called a 10,000 psi O-ring, is made of Polyurethane. Polyurethane is very abrasion-resistant, but it is sensitive to UV light (sunlight). Clean the o-ring and groove: The groove where the o-ring is installed must be clean and free from any dirt, debris, or previous sealant residue. Also, ensure the o-ring is clean and free from debris or damage. Use a clean, lint-free cloth to wipe the groove clean. stage inlet fittings; J-regulators; Common in aluminium cylinder valve to yoke regulator, Sherwood 5121-105, Scubapro 1,050,347, Mares 46110211, Apeks: AP1159 The ISO 12209 standard specification for dimensions of the O-ring groove in the nose of the 232 bar and 300 bar DIN connectors for compressed air has an inside dimension of 12 mm and an outside dimension of 17 mm. In 2003, the standard depth for the groove was revised from the original 1.9 mm to a slightly deeper 2 mm. The specification for the sealing O-ring itself is an inside diameter of 11.2 mm with a cross section of 2.65 mm. From what we have been able to determine, not all SCUBA regulator manufacturers seem to use the current standard groove and O-ring in the universal DIN fittings found on their first stages. This testing device comprises of a tube containing a specific magnitude weight (Figure 6 labeled A). The weight descends a predetermined distance for each material, as shown on Figure 6.O-rings are normally available with a hardness rating, as measured by an ASTM type-A durometer, of 70 (the "soft" kind) or more rarely a rating of 90 (the "stiff" kind). The soft O-rings are appropriate for dynamic applications where the O-ring is providing a seal with a constantly moving part, such as inside regulators. The stiff O-rings are more durable in static applications where the O-ring is providing a seal with stationary or occasionally moving parts, such as a valve. O-Ring Colour: Extraction and Insertion damage is reduced. Using metal objects to remove O Rings can cause damage to the housing and equipment which then create a leak path that affects the integrity of the seal The groove in the Cressi and Poseidon brand regulator DIN connectors measures closest to the original standard, best accepting a BS ISO 3601 metric size O-ring with 11.3 X 2.4 dimensions for which there is no imperial standard equivalent. The M2.4X11.3 size O-ring is uncommon, especially in a material suitable for use with Nitrox. (FYI, the O-ring in Yoke K-valves is easy, it is always an 014 size.) High-viscosity silicone oil: High viscosity silicone oil is an ideal all-purpose o-ring lubricant. It is an incredibly efficient seal lubricant and can be utilized in temperatures between -54 𐩑C - 204 𐩑C (-65 𐩑F - 400 𐩑F). Lubricate the o-ring: Lubricating the o-ring and the groove with a compatible lubricant is critical to ensure it slides into the groove smoothly without any twisting or damage (discussed in depth later in the article).

The information that follows should help you to know more about the O-rings used in various scuba diving applications. O-Ring Sizing O-rings can be made of a very long list of exotic materials and most are inappropriate for SCUBA applications. The materials commonly used in SCUBA applications appear in the following table. Material WHAT'S INCLUDED - 3 pieces of 14g (1.6mm) clear flexible navel button ring with clear rubber o-rings.We have 3 length options ; 5/16 inch (8mm), 3/8 inch (10mm) and 1/4 inch (12mm), please choose your size.

Why can’t I use a metal O-ring pick?

NEW PIERCING – The Bioflex Material is perfect for new belly button rings 14g, it's comfortable and offers great reduction of infection risk. Figure 5: O-ring measurement: Inner diameter (A), outer diameter (B), and cross-section (C) Determining o-ring material Proper o-ring installation ensures proper sealing of mechanical systems, preventing fluids and gasses from leaking out or entering unwanted areas. Installing an o-ring involves several crucial steps that must be performed carefully to avoid damaging the o-ring or compromising its performance. Here's a general overview of the installation process: To get the greatest product, you need to pay attention to the quality of the things you are purchasing.

General-purpose grease lubricants: General-purpose grease lubricant is excellent for o-ring and elastomer seal varieties used in hydrocarbon service. General-purpose grease lubricant has a recommended service temperature of -29 𐩑C - 82 𐩑C (-20 𐩑F - 180 𐩑F).EPDM O-rings are becoming more common in SCUBA because some people feel it's a safer material for use in breathing air systems. EPDM is a elastomer with excellent weatherability, heat resistance, dielectric qualities and odor-free characteristics. However, EPDM is less resilient and is not recommended for use with petroleum derivatives. The terms FPM, FKM and Viton® very often cause confusion and lead to incorrect interpretations. All of these designations actually stand for one single base material: fluoro rubber. Some people believe there is a difference in quality based on colour, but that is more likely attributed to unknowingly using soft dynamic O-rings in static applications. Our O-ring manufacturer states there is little difference in quality for O-rings based on colour alone, and independent testing supports that statement. FLEXIBLE,LIGHT WEIGHT AND COMFORTABLE - Acrylic belly button ring retainer is comfortable, you won’t even notice them when you sleep. FEATURES : belly button rings, belly button rings 5/16, bioplastic belly button rings, clear belly ring, 14 gauge belly button rings stage inlet fittings; HP seal retainer seal; J valve module; Valve HP plugs; 2nd stage barrel and housing plug seals, Shewood 5121-106, Scubapro 1,050,158, Apeks: AP1267