Sealey Ak522 O-Ring and Seal Pick

Product Information

The sealing O-ring in the nose of the DIN connector groove we find on most SCUBA regulator first stages is commonly an SAE AS568 and BS ISO 3601 imperial standard 112 size that is equivalent to 12.37 X 2.62 metric dimensions. In the case of a few regulators (notably Apeks, Atomic, and ScubaPro brands) their groove better accepts the next smaller 111 size O-ring that is equivalent to 10.77 X 2.62 metric dimensions. Both the 112 and 111 size O-rings are very common sizes available in a variety of choices for material and durometer.

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. 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. 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: AP1267This 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 made of FPM/FKM/Viton® have been the preferred choice for oxygen and nitrox compatibility in SCUBA diving applications. FPM/FKM/Viton® is an elastomer with excellent oil and oxygen resistance at high and low temperatures, very good chemical resistance. Even for use with ordinary air, most experts agree that FPM/FKM/Viton® O-rings outperform common Nitrile O-rings. O Ring Gauge– The instrument allows you to identify the size of almost any O Ring Seal and meets the BS1806 and AS568 Standards. 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.

The o-ring is made of NBR; it has an inner diameter, cross-section, and outer diameter of 5.7, 1.9, and 9.5 mm, respectively. O Ring Lube– Make the installation of your O Ring easier with Lube. Formulated to facilitate installation and extended service life of synthetic rubber O Rings and Seals. Learn more about why and when to use O Ring Lube here. Anyone who has to regularly remove and fit O rings on hydraulic, pneumatic or other equipment will know that it can be a fiddly task. The job is made much easier if you have the right tools on hand. NEW PIERCING – The Bioflex Material is perfect for new belly button rings 14g, it's comfortable and offers great reduction of infection risk.Upon impact, the o-ring will rebound, and the height of the first bounce will fall into one of four calibrated ranges. Older internal swivel seal models; AT-PAC BC's Power inflator control Sherwood 6121-122, Apeks id: AP6403 To get the greatest product, you need to pay attention to the quality of the things you are purchasing. Note: As a rule of thumb, the smallest dimension in the specification will be the o-ring cross-section, the largest dimension will be its outer diameter, and the intermediate value is its inner diameter. Lubrication 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).

Position the testing device over the o-ring and lift the weight to the topmost point of the tube. Then allow it to drop onto the o-ring. Used as the Standard for most DIN First Stage Regulators, plus most DIN Valve inserts (e.g. those on the Faber/San-o-Sub DIN/K valves). However, if you aren't well versed in the technical aspect of scuba gear, it's only advisable to attempt to change the O-ring on a scuba cylinder/tank valve (Yoke), or the face of your DIN regulator. Leave other O-rings for experienced professionals.

Extraction & Insertion O Ring Tool

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 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.) The BS1806 number is a three-digit suffix that identifies the O-ring's size. Technically, an O-ring size is listed as BS1806-016, BS1806-112, etc., but most people use BS and the three-digit number (e.g. BS112), or just the three-digit number (e.g. 112). The first digit denotes the O-ring cross section width: 0xx = 1/16-inch, 1xx = 3/32-inch, 2xx = 1/8-inch. O-rings are measured by their inside, outside, and cross-sectional diameter. O-ring measuring tools like rulers or calipers can be used for these measurements. What is an o-ring installation tool? 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