Rope Rescue/Equipment/Need/O ring

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1 Requirements
2 Products
- 2.1 Yates 7800 Anchor Ring
- 2.2 Forged Steel MPA O-Ring
3 Discounted

[edit] Requirements

large. Needs to accommodate 2 ropes and 5 carabiners
MBS: 20kN, prefer much stronger if used as single point of failure
2 steel o-rings for MAP @ US$14.00 : US$28.00
totals:
- base: US$28.00
- options: -
- maximum: US$28.00
- shipping, taxes, duty

[edit] Products

listed in order of preference

[edit] Yates 7800 Anchor Ring

preferred choice

Manufacturer's page

Rigging collection ring useful for many rigging and rescue applications. Drop forged alloy steel.

"Large"
Strength 10,000 lbf/44kN,
1/2 inch
3 inch diameter ID
4.00 inch diameter OD.
country of origin: assume US
price
- US$14.00 2016-03-23 from Yates SKU 7800

2016-10-26 marked yellow,green,black paint. See photos Brett's 2016-10-26 notes.
- One is stamped "12A 7800"; the other "12B 7800"

[edit] Forged Steel MPA O-Ring

less prefered: does not list price on-line

This is a bombproof forged steel ring commonly used for gathering a litter spider.

Perfect for any multi-directional loading situation.

Breaking strength: 45 kN (10,000 Ibf).
Weight: 265 g (9 oz).
Inside Diameter: 3".
http://catalogue.carletonrescue.com/do/ppa/456/Forged_Steel_MPA_O-Ring.html
- Call for pricing. Canadian

[edit] Discounted

[edit] CMC

discounted: product no longer listed
http://www.cmcrescue.com/product.php?dept_id=1057
- 44 kN

[edit] SMC Descending Ring

discounted: too weak

Product Number: 1410-117 Made in USA

Weight: 11g

   Strength is 14.kN.
   Ring is rolled (not welded).
   3.8cm (1.5in.) inside diameter.

An aluminum ring that facilitates getting your rope back after rappelling. It’s cheap enough to leave behind, and light (so you can carry a bundle for alpine routes).

[edit] Fixe Descending Ring

discounted: too small
Weight: 95g
Rated at 50kn / 12,500lbs.
Inner Diameter - 1 3/8"
Outer Diameter - 2 1/8"
10mm rod stock
Made in Spain

This ring is rated to a stout 50kN. It is made of stainless steel and works well for setting up durable rappel stations or lowering stations. Connect to hangers via maillons, chain, and so on, making sure all units are stainless steel to prevent galvanic corrosion. The steel wears longer but is heavier, so for alpine rap stations take along aluminum ones.

"It is large enough to put two carabiners and a rope through"